Remove useless gtSetFlags calls
Remove useless gtSetFlags calls

For xarch `gtSetFlags` returns true and that makes `genIntToIntCast` use an `and` instruction instead of `mov`/`movzx`. This serves no purpose as no code ever calls `gtRequestSetFlags` on cast nodes nor does `GT_JTRUE` expects a cast node as its operand.

`gtSetFlags` seems to be a leftover from the legacy codegen.

naamunds/coreclr,jhendrixMSFT/coreclr,martinwoodward/coreclr,wtgodbe/coreclr,ragmani/coreclr,pgavlin/coreclr,kyulee1/coreclr,roncain/coreclr,manu-silicon/coreclr,YongseopKim/coreclr,AlexGhiondea/coreclr,poizan42/coreclr,mskvortsov/coreclr,botaberg/coreclr,cmckinsey/coreclr,ZhichengZhu/coreclr,alexperovich/coreclr,ramarag/coreclr,yeaicc/coreclr,botaberg/coreclr,rartemev/coreclr,ramarag/coreclr,josteink/coreclr,shahid-pk/coreclr,jamesqo/coreclr,kyulee1/coreclr,mskvortsov/coreclr,mmitche/coreclr,bartdesmet/coreclr,ramarag/coreclr,rartemev/coreclr,Dmitry-Me/coreclr,yizhang82/coreclr,shahid-pk/coreclr,YongseopKim/coreclr,qiudesong/coreclr,ragmani/coreclr,yizhang82/coreclr,KrzysztofCwalina/coreclr,KrzysztofCwalina/coreclr,shahid-pk/coreclr,vinnyrom/coreclr,ruben-ayrapetyan/coreclr,cshung/coreclr,James-Ko/coreclr,tijoytom/coreclr,tijoytom/coreclr,ZhichengZhu/coreclr,ramarag/coreclr,dasMulli/coreclr,neurospeech/coreclr,martinwoodward/coreclr,hseok-oh/coreclr,yeaicc/coreclr,krytarowski/coreclr,bartdesmet/coreclr,gkhanna79/coreclr,pgavlin/coreclr,mmitche/coreclr,vinnyrom/coreclr,neurospeech/coreclr,poizan42/coreclr,josteink/coreclr,dpodder/coreclr,qiudesong/coreclr,martinwoodward/coreclr,krk/coreclr,JonHanna/coreclr,hseok-oh/coreclr,qiudesong/coreclr,manu-silicon/coreclr,russellhadley/coreclr,JonHanna/coreclr,AlexGhiondea/coreclr,ruben-ayrapetyan/coreclr,gkhanna79/coreclr,shahid-pk/coreclr,gkhanna79/coreclr,krytarowski/coreclr,KrzysztofCwalina/coreclr,jamesqo/coreclr,botaberg/coreclr,AlexGhiondea/coreclr,neurospeech/coreclr,wateret/coreclr,roncain/coreclr,ruben-ayrapetyan/coreclr,vinnyrom/coreclr,wtgodbe/coreclr,Dmitry-Me/coreclr,krytarowski/coreclr,krytarowski/coreclr,russellhadley/coreclr,yizhang82/coreclr,ramarag/coreclr,yeaicc/coreclr,JosephTremoulet/coreclr,dasMulli/coreclr,yeaicc/coreclr,cshung/coreclr,rartemev/coreclr,parjong/coreclr,josteink/coreclr,dpodder/coreclr,sjsinju/coreclr,jhendrixMSFT/coreclr,poizan42/coreclr,yizhang82/coreclr,martinwoodward/coreclr,sjsinju/coreclr,kyulee1/coreclr,hseok-oh/coreclr,sagood/coreclr,vinnyrom/coreclr,kyulee1/coreclr,manu-silicon/coreclr,qiudesong/coreclr,Dmitry-Me/coreclr,tijoytom/coreclr,JosephTremoulet/coreclr,cshung/coreclr,rartemev/coreclr,poizan42/coreclr,rartemev/coreclr,parjong/coreclr,martinwoodward/coreclr,jamesqo/coreclr,cmckinsey/coreclr,yizhang82/coreclr,botaberg/coreclr,cshung/coreclr,pgavlin/coreclr,wateret/coreclr,yeaicc/coreclr,JosephTremoulet/coreclr,James-Ko/coreclr,ruben-ayrapetyan/coreclr,russellhadley/coreclr,wateret/coreclr,vinnyrom/coreclr,YongseopKim/coreclr,JonHanna/coreclr,dpodder/coreclr,AlexGhiondea/coreclr,martinwoodward/coreclr,sjsinju/coreclr,wtgodbe/coreclr,ragmani/coreclr,AlexGhiondea/coreclr,sagood/coreclr,krk/coreclr,sjsinju/coreclr,botaberg/coreclr,mmitche/coreclr,jamesqo/coreclr,yizhang82/coreclr,ramarag/coreclr,krytarowski/coreclr,shahid-pk/coreclr,pgavlin/coreclr,ZhichengZhu/coreclr,qiudesong/coreclr,mmitche/coreclr,pgavlin/coreclr,gkhanna79/coreclr,cmckinsey/coreclr,ZhichengZhu/coreclr,ragmani/coreclr,dasMulli/coreclr,sjsinju/coreclr,cmckinsey/coreclr,krk/coreclr,botaberg/coreclr,shahid-pk/coreclr,hseok-oh/coreclr,parjong/coreclr,qiudesong/coreclr,neurospeech/coreclr,krk/coreclr,neurospeech/coreclr,naamunds/coreclr,JonHanna/coreclr,josteink/coreclr,cydhaselton/coreclr,naamunds/coreclr,pgavlin/coreclr,mskvortsov/coreclr,ragmani/coreclr,cmckinsey/coreclr,AlexGhiondea/coreclr,roncain/coreclr,JonHanna/coreclr,russellhadley/coreclr,parjong/coreclr,ruben-ayrapetyan/coreclr,shahid-pk/coreclr,sjsinju/coreclr,naamunds/coreclr,wtgodbe/coreclr,wtgodbe/coreclr,jhendrixMSFT/coreclr,wateret/coreclr,alexperovich/coreclr,josteink/coreclr,cshung/coreclr,dpodder/coreclr,cydhaselton/coreclr,James-Ko/coreclr,dasMulli/coreclr,tijoytom/coreclr,manu-silicon/coreclr,sagood/coreclr,ZhichengZhu/coreclr,bartdesmet/coreclr,manu-silicon/coreclr,ZhichengZhu/coreclr,KrzysztofCwalina/coreclr,cydhaselton/coreclr,jhendrixMSFT/coreclr,James-Ko/coreclr,alexperovich/coreclr,bartdesmet/coreclr,sagood/coreclr,cydhaselton/coreclr,JosephTremoulet/coreclr,mmitche/coreclr,jamesqo/coreclr,mskvortsov/coreclr,tijoytom/coreclr,rartemev/coreclr,Dmitry-Me/coreclr,hseok-oh/coreclr,poizan42/coreclr,russellhadley/coreclr,vinnyrom/coreclr,poizan42/coreclr,alexperovich/coreclr,mmitche/coreclr,cmckinsey/coreclr,JosephTremoulet/coreclr,Dmitry-Me/coreclr,roncain/coreclr,dpodder/coreclr,mskvortsov/coreclr,jhendrixMSFT/coreclr,gkhanna79/coreclr,kyulee1/coreclr,martinwoodward/coreclr,mskvortsov/coreclr,parjong/coreclr,bartdesmet/coreclr,dasMulli/coreclr,naamunds/coreclr,russellhadley/coreclr,James-Ko/coreclr,JonHanna/coreclr,sagood/coreclr,naamunds/coreclr,krk/coreclr,ruben-ayrapetyan/coreclr,KrzysztofCwalina/coreclr,James-Ko/coreclr,cshung/coreclr,alexperovich/coreclr,bartdesmet/coreclr,vinnyrom/coreclr,hseok-oh/coreclr,ramarag/coreclr,YongseopKim/coreclr,tijoytom/coreclr,dasMulli/coreclr,alexperovich/coreclr,dasMulli/coreclr,Dmitry-Me/coreclr,parjong/coreclr,yeaicc/coreclr,neurospeech/coreclr,wateret/coreclr,jhendrixMSFT/coreclr,josteink/coreclr,roncain/coreclr,gkhanna79/coreclr,cmckinsey/coreclr,yeaicc/coreclr,kyulee1/coreclr,Dmitry-Me/coreclr,KrzysztofCwalina/coreclr,krytarowski/coreclr,JosephTremoulet/coreclr,cydhaselton/coreclr,josteink/coreclr,wtgodbe/coreclr,manu-silicon/coreclr,YongseopKim/coreclr,ZhichengZhu/coreclr,KrzysztofCwalina/coreclr,wateret/coreclr,manu-silicon/coreclr,ragmani/coreclr,krk/coreclr,cydhaselton/coreclr,naamunds/coreclr,jhendrixMSFT/coreclr,sagood/coreclr,dpodder/coreclr,bartdesmet/coreclr,roncain/coreclr,YongseopKim/coreclr,jamesqo/coreclr,roncain/coreclr