Delete incorrect AMD64 ifdef
Delete incorrect AMD64 ifdef

ReadyToRun case of getCallInstruction was incorrectly ifdefed out
for AMD64. Delete the incorrect ifdef and make other adjustment
to make the code compile for X86 as well.

Lucrecious/coreclr,iamjasonp/coreclr,vinnyrom/coreclr,josteink/coreclr,cmckinsey/coreclr,hseok-oh/coreclr,serenabenny/coreclr,cshung/coreclr,gkhanna79/coreclr,xoofx/coreclr,martinwoodward/coreclr,Sridhar-MS/coreclr,alexperovich/coreclr,LLITCHEV/coreclr,Djuffin/coreclr,geertdoornbos/coreclr,sperling/coreclr,SlavaRa/coreclr,schellap/coreclr,ramarag/coreclr,Sridhar-MS/coreclr,pgavlin/coreclr,AlfredoMS/coreclr,geertdoornbos/coreclr,serenabenny/coreclr,yizhang82/coreclr,schellap/coreclr,cmckinsey/coreclr,martinwoodward/coreclr,schellap/coreclr,orthoxerox/coreclr,ericeil/coreclr,orthoxerox/coreclr,Lucrecious/coreclr,perfectphase/coreclr,ragmani/coreclr,sjsinju/coreclr,sejongoh/coreclr,JosephTremoulet/coreclr,naamunds/coreclr,parjong/coreclr,qiudesong/coreclr,James-Ko/coreclr,wkchoy74/coreclr,yizhang82/coreclr,ruben-ayrapetyan/coreclr,ruben-ayrapetyan/coreclr,chuck-mitchell/coreclr,wkchoy74/coreclr,AlexGhiondea/coreclr,neurospeech/coreclr,mskvortsov/coreclr,krytarowski/coreclr,benpye/coreclr,chrishaly/coreclr,gkhanna79/coreclr,mokchhya/coreclr,taylorjonl/coreclr,krixalis/coreclr,bitcrazed/coreclr,russellhadley/coreclr,parjong/coreclr,shahid-pk/coreclr,tijoytom/coreclr,rartemev/coreclr,josteink/coreclr,mmitche/coreclr,sejongoh/coreclr,shahid-pk/coreclr,YongseopKim/coreclr,SlavaRa/coreclr,cmckinsey/coreclr,Sridhar-MS/coreclr,poizan42/coreclr,ZhichengZhu/coreclr,taylorjonl/coreclr,ZhichengZhu/coreclr,ramarag/coreclr,parjong/coreclr,swgillespie/coreclr,Alcaro/coreclr,orthoxerox/coreclr,tijoytom/coreclr,geertdoornbos/coreclr,andschwa/coreclr,JonHanna/coreclr,jamesqo/coreclr,LLITCHEV/coreclr,ericeil/coreclr,gkhanna79/coreclr,SlavaRa/coreclr,sjsinju/coreclr,russellhadley/coreclr,krixalis/coreclr,AlfredoMS/coreclr,bartdesmet/coreclr,bartonjs/coreclr,orthoxerox/coreclr,russellhadley/coreclr,YongseopKim/coreclr,chrishaly/coreclr,benpye/coreclr,ericeil/coreclr,JosephTremoulet/coreclr,krixalis/coreclr,JosephTremoulet/coreclr,Dmitry-Me/coreclr,dasMulli/coreclr,Alcaro/coreclr,gkhanna79/coreclr,ZhichengZhu/coreclr,Alcaro/coreclr,schellap/coreclr,Lucrecious/coreclr,mocsy/coreclr,perfectphase/coreclr,krytarowski/coreclr,hseok-oh/coreclr,James-Ko/coreclr,chuck-mitchell/coreclr,mmitche/coreclr,kyulee1/coreclr,hseok-oh/coreclr,KrzysztofCwalina/coreclr,rartemev/coreclr,perfectphase/coreclr,serenabenny/coreclr,stormleoxia/coreclr,krytarowski/coreclr,bitcrazed/coreclr,benpye/coreclr,sejongoh/coreclr,stormleoxia/coreclr,yizhang82/coreclr,sagood/coreclr,dpodder/coreclr,benpye/coreclr,ZhichengZhu/coreclr,perfectphase/coreclr,YongseopKim/coreclr,James-Ko/coreclr,sagood/coreclr,JosephTremoulet/coreclr,cshung/coreclr,AlfredoMS/coreclr,KrzysztofCwalina/coreclr,YongseopKim/coreclr,Godin/coreclr,stormleoxia/coreclr,manu-silicon/coreclr,alexperovich/coreclr,benpye/coreclr,JosephTremoulet/coreclr,geertdoornbos/coreclr,pgavlin/coreclr,Godin/coreclr,sperling/coreclr,ktos/coreclr,russellhadley/coreclr,dpodder/coreclr,jhendrixMSFT/coreclr,geertdoornbos/coreclr,JonHanna/coreclr,LLITCHEV/coreclr,naamunds/coreclr,JosephTremoulet/coreclr,KrzysztofCwalina/coreclr,bartonjs/coreclr,kyulee1/coreclr,yeaicc/coreclr,mokchhya/coreclr,yeaicc/coreclr,roncain/coreclr,Djuffin/coreclr,Djuffin/coreclr,iamjasonp/coreclr,mmitche/coreclr,LLITCHEV/coreclr,vinnyrom/coreclr,ruben-ayrapetyan/coreclr,josteink/coreclr,mocsy/coreclr,yizhang82/coreclr,mmitche/coreclr,ragmani/coreclr,dasMulli/coreclr,ramarag/coreclr,mocsy/coreclr,JonHanna/coreclr,Godin/coreclr,Godin/coreclr,roncain/coreclr,qiudesong/coreclr,bartdesmet/coreclr,ktos/coreclr,SlavaRa/coreclr,ragmani/coreclr,iamjasonp/coreclr,josteink/coreclr,stormleoxia/coreclr,sjsinju/coreclr,Samana/coreclr,sperling/coreclr,mskvortsov/coreclr,shahid-pk/coreclr,KrzysztofCwalina/coreclr,JonHanna/coreclr,chrishaly/coreclr,tijoytom/coreclr,Alcaro/coreclr,botaberg/coreclr,wateret/coreclr,martinwoodward/coreclr,mokchhya/coreclr,jamesqo/coreclr,Dmitry-Me/coreclr,ragmani/coreclr,cydhaselton/coreclr,qiudesong/coreclr,AlexGhiondea/coreclr,neurospeech/coreclr,James-Ko/coreclr,blackdwarf/coreclr,dpodder/coreclr,bartonjs/coreclr,wtgodbe/coreclr,xoofx/coreclr,krixalis/coreclr,Lucrecious/coreclr,botaberg/coreclr,James-Ko/coreclr,roncain/coreclr,yeaicc/coreclr,chuck-mitchell/coreclr,schellap/coreclr,sperling/coreclr,tijoytom/coreclr,mokchhya/coreclr,dasMulli/coreclr,bartdesmet/coreclr,poizan42/coreclr,blackdwarf/coreclr,manu-silicon/coreclr,KrzysztofCwalina/coreclr,KrzysztofCwalina/coreclr,ruben-ayrapetyan/coreclr,ramarag/coreclr,krk/coreclr,blackdwarf/coreclr,krytarowski/coreclr,wateret/coreclr,shahid-pk/coreclr,sejongoh/coreclr,bartdesmet/coreclr,bitcrazed/coreclr,mocsy/coreclr,roncain/coreclr,cydhaselton/coreclr,dasMulli/coreclr,dasMulli/coreclr,taylorjonl/coreclr,wateret/coreclr,vinnyrom/coreclr,cshung/coreclr,jamesqo/coreclr,botaberg/coreclr,gkhanna79/coreclr,botaberg/coreclr,YongseopKim/coreclr,neurospeech/coreclr,ramarag/coreclr,martinwoodward/coreclr,Dmitry-Me/coreclr,neurospeech/coreclr,cshung/coreclr,krk/coreclr,manu-silicon/coreclr,iamjasonp/coreclr,tijoytom/coreclr,LLITCHEV/coreclr,mskvortsov/coreclr,sejongoh/coreclr,hseok-oh/coreclr,Samana/coreclr,mmitche/coreclr,naamunds/coreclr,chuck-mitchell/coreclr,AlfredoMS/coreclr,bartonjs/coreclr,alexperovich/coreclr,sagood/coreclr,parjong/coreclr,yeaicc/coreclr,geertdoornbos/coreclr,mocsy/coreclr,krk/coreclr,shahid-pk/coreclr,Djuffin/coreclr,geertdoornbos/coreclr,josteink/coreclr,kyulee1/coreclr,JonHanna/coreclr,taylorjonl/coreclr,cydhaselton/coreclr,Lucrecious/coreclr,Godin/coreclr,chrishaly/coreclr,OryJuVog/coreclr,tijoytom/coreclr,Djuffin/coreclr,wkchoy74/coreclr,AlfredoMS/coreclr,schellap/coreclr,sagood/coreclr,andschwa/coreclr,kyulee1/coreclr,roncain/coreclr,vinnyrom/coreclr,ktos/coreclr,mskvortsov/coreclr,ZhichengZhu/coreclr,kyulee1/coreclr,roncain/coreclr,KrzysztofCwalina/coreclr,andschwa/coreclr,andschwa/coreclr,ktos/coreclr,andschwa/coreclr,schellap/coreclr,russellhadley/coreclr,cmckinsey/coreclr,ZhichengZhu/coreclr,qiudesong/coreclr,alexperovich/coreclr,taylorjonl/coreclr,Alcaro/coreclr,Dmitry-Me/coreclr,swgillespie/coreclr,jhendrixMSFT/coreclr,sjsinju/coreclr,mokchhya/coreclr,stormleoxia/coreclr,blackdwarf/coreclr,wateret/coreclr,rartemev/coreclr,sperling/coreclr,parjong/coreclr,pgavlin/coreclr,botaberg/coreclr,Lucrecious/coreclr,wtgodbe/coreclr,AlexGhiondea/coreclr,swgillespie/coreclr,ramarag/coreclr,yizhang82/coreclr,martinwoodward/coreclr,sjsinju/coreclr,bitcrazed/coreclr,OryJuVog/coreclr,poizan42/coreclr,xoofx/coreclr,OryJuVog/coreclr,chrishaly/coreclr,AlexGhiondea/coreclr,wateret/coreclr,jamesqo/coreclr,qiudesong/coreclr,SlavaRa/coreclr,wkchoy74/coreclr,yizhang82/coreclr,naamunds/coreclr,jhendrixMSFT/coreclr,ramarag/coreclr,dpodder/coreclr,naamunds/coreclr,pgavlin/coreclr,andschwa/coreclr,LLITCHEV/coreclr,blackdwarf/coreclr,mokchhya/coreclr,Godin/coreclr,AlexGhiondea/coreclr,yeaicc/coreclr,sjsinju/coreclr,bartonjs/coreclr,manu-silicon/coreclr,krytarowski/coreclr,benpye/coreclr,jamesqo/coreclr,bartdesmet/coreclr,jhendrixMSFT/coreclr,wkchoy74/coreclr,naamunds/coreclr,manu-silicon/coreclr,cydhaselton/coreclr,botaberg/coreclr,chuck-mitchell/coreclr,Samana/coreclr,poizan42/coreclr,bartdesmet/coreclr,blackdwarf/coreclr,cydhaselton/coreclr,iamjasonp/coreclr,cshung/coreclr,chuck-mitchell/coreclr,shahid-pk/coreclr,alexperovich/coreclr,pgavlin/coreclr,dpodder/coreclr,Samana/coreclr,swgillespie/coreclr,Dmitry-Me/coreclr,neurospeech/coreclr,rartemev/coreclr,krixalis/coreclr,krk/coreclr,serenabenny/coreclr,ericeil/coreclr,bitcrazed/coreclr,AlexGhiondea/coreclr,Samana/coreclr,ruben-ayrapetyan/coreclr,OryJuVog/coreclr,James-Ko/coreclr,Dmitry-Me/coreclr,krixalis/coreclr,SlavaRa/coreclr,wkchoy74/coreclr,mocsy/coreclr,cmckinsey/coreclr,bitcrazed/coreclr,rartemev/coreclr,ktos/coreclr,wtgodbe/coreclr,martinwoodward/coreclr,xoofx/coreclr,Dmitry-Me/coreclr,shahid-pk/coreclr,Alcaro/coreclr,martinwoodward/coreclr,xoofx/coreclr,YongseopKim/coreclr,krytarowski/coreclr,ragmani/coreclr,taylorjonl/coreclr,sperling/coreclr,Samana/coreclr,swgillespie/coreclr,jamesqo/coreclr,kyulee1/coreclr,vinnyrom/coreclr,mskvortsov/coreclr,wtgodbe/coreclr,wateret/coreclr,wkchoy74/coreclr,dpodder/coreclr,orthoxerox/coreclr,jhendrixMSFT/coreclr,ragmani/coreclr,bartonjs/coreclr,OryJuVog/coreclr,taylorjonl/coreclr,hseok-oh/coreclr,bartdesmet/coreclr,mskvortsov/coreclr,orthoxerox/coreclr,gkhanna79/coreclr,JonHanna/coreclr,josteink/coreclr,roncain/coreclr,vinnyrom/coreclr,rartemev/coreclr,vinnyrom/coreclr,mokchhya/coreclr,mocsy/coreclr,Sridhar-MS/coreclr,qiudesong/coreclr,alexperovich/coreclr,ericeil/coreclr,wtgodbe/coreclr,cydhaselton/coreclr,neurospeech/coreclr,yeaicc/coreclr,cshung/coreclr,swgillespie/coreclr,ZhichengZhu/coreclr,serenabenny/coreclr,blackdwarf/coreclr,sagood/coreclr,AlfredoMS/coreclr,Lucrecious/coreclr,Sridhar-MS/coreclr,yeaicc/coreclr,jhendrixMSFT/coreclr,poizan42/coreclr,xoofx/coreclr,sejongoh/coreclr,poizan42/coreclr,hseok-oh/coreclr,bartonjs/coreclr,bitcrazed/coreclr,pgavlin/coreclr,stormleoxia/coreclr,manu-silicon/coreclr,dasMulli/coreclr,ruben-ayrapetyan/coreclr,mmitche/coreclr,chrishaly/coreclr,krk/coreclr,ktos/coreclr,jhendrixMSFT/coreclr,krk/coreclr,sagood/coreclr,andschwa/coreclr,chuck-mitchell/coreclr,manu-silicon/coreclr,cmckinsey/coreclr,sejongoh/coreclr,naamunds/coreclr,OryJuVog/coreclr,ktos/coreclr,Sridhar-MS/coreclr,serenabenny/coreclr,josteink/coreclr,perfectphase/coreclr,stormleoxia/coreclr,Djuffin/coreclr,ericeil/coreclr,cmckinsey/coreclr,sperling/coreclr,iamjasonp/coreclr,dasMulli/coreclr,LLITCHEV/coreclr,russellhadley/coreclr,wtgodbe/coreclr,swgillespie/coreclr,perfectphase/coreclr,benpye/coreclr,parjong/coreclr,Godin/coreclr