Re-enable .vsix schema validation now that we require Update 1
Re-enable .vsix schema validation now that we require Update 1

panopticoncentral/roslyn,rgani/roslyn,OmarTawfik/roslyn,vslsnap/roslyn,CyrusNajmabadi/roslyn,Giftednewt/roslyn,bbarry/roslyn,paulvanbrenk/roslyn,dpoeschl/roslyn,tvand7093/roslyn,gafter/roslyn,davkean/roslyn,genlu/roslyn,bkoelman/roslyn,eriawan/roslyn,jkotas/roslyn,zooba/roslyn,jamesqo/roslyn,vcsjones/roslyn,pdelvo/roslyn,aelij/roslyn,jamesqo/roslyn,wvdd007/roslyn,MattWindsor91/roslyn,budcribar/roslyn,davkean/roslyn,vcsjones/roslyn,nguerrera/roslyn,OmarTawfik/roslyn,zooba/roslyn,KevinH-MS/roslyn,drognanar/roslyn,tmeschter/roslyn,mmitche/roslyn,jamesqo/roslyn,natgla/roslyn,srivatsn/roslyn,sharwell/roslyn,jmarolf/roslyn,xasx/roslyn,mattwar/roslyn,Hosch250/roslyn,kelltrick/roslyn,swaroop-sridhar/roslyn,Maxwe11/roslyn,KiloBravoLima/roslyn,diryboy/roslyn,AArnott/roslyn,akrisiun/roslyn,AnthonyDGreen/roslyn,bartdesmet/roslyn,jaredpar/roslyn,MatthieuMEZIL/roslyn,shyamnamboodiripad/roslyn,eriawan/roslyn,genlu/roslyn,cston/roslyn,jmarolf/roslyn,cston/roslyn,AmadeusW/roslyn,AmadeusW/roslyn,mgoertz-msft/roslyn,AnthonyDGreen/roslyn,basoundr/roslyn,stephentoub/roslyn,CyrusNajmabadi/roslyn,sharwell/roslyn,MattWindsor91/roslyn,leppie/roslyn,amcasey/roslyn,KirillOsenkov/roslyn,a-ctor/roslyn,agocke/roslyn,kelltrick/roslyn,heejaechang/roslyn,bbarry/roslyn,jkotas/roslyn,lorcanmooney/roslyn,natgla/roslyn,weltkante/roslyn,mgoertz-msft/roslyn,akrisiun/roslyn,jhendrixMSFT/roslyn,ValentinRueda/roslyn,KevinH-MS/roslyn,srivatsn/roslyn,vcsjones/roslyn,tmat/roslyn,wvdd007/roslyn,physhi/roslyn,AlekseyTs/roslyn,weltkante/roslyn,jaredpar/roslyn,Giftednewt/roslyn,eriawan/roslyn,mmitche/roslyn,SeriaWei/roslyn,bartdesmet/roslyn,ValentinRueda/roslyn,heejaechang/roslyn,jasonmalinowski/roslyn,KevinH-MS/roslyn,SeriaWei/roslyn,MattWindsor91/roslyn,CaptainHayashi/roslyn,ljw1004/roslyn,jcouv/roslyn,pdelvo/roslyn,budcribar/roslyn,basoundr/roslyn,mattscheffer/roslyn,diryboy/roslyn,panopticoncentral/roslyn,drognanar/roslyn,gafter/roslyn,balajikris/roslyn,TyOverby/roslyn,heejaechang/roslyn,tmat/roslyn,drognanar/roslyn,balajikris/roslyn,DustinCampbell/roslyn,khyperia/roslyn,jaredpar/roslyn,AArnott/roslyn,tvand7093/roslyn,ericfe-ms/roslyn,mattwar/roslyn,Pvlerick/roslyn,aelij/roslyn,KiloBravoLima/roslyn,xoofx/roslyn,sharwell/roslyn,orthoxerox/roslyn,MattWindsor91/roslyn,lorcanmooney/roslyn,davkean/roslyn,jhendrixMSFT/roslyn,ValentinRueda/roslyn,Giftednewt/roslyn,jcouv/roslyn,MatthieuMEZIL/roslyn,agocke/roslyn,Shiney/roslyn,MichalStrehovsky/roslyn,mattwar/roslyn,mavasani/roslyn,KiloBravoLima/roslyn,mavasani/roslyn,khellang/roslyn,paulvanbrenk/roslyn,robinsedlaczek/roslyn,AnthonyDGreen/roslyn,shyamnamboodiripad/roslyn,akrisiun/roslyn,jeffanders/roslyn,abock/roslyn,Maxwe11/roslyn,jcouv/roslyn,sharadagrawal/Roslyn,vslsnap/roslyn,MichalStrehovsky/roslyn,amcasey/roslyn,panopticoncentral/roslyn,pdelvo/roslyn,sharadagrawal/Roslyn,natidea/roslyn,orthoxerox/roslyn,ErikSchierboom/roslyn,ericfe-ms/roslyn,physhi/roslyn,basoundr/roslyn,michalhosala/roslyn,jeffanders/roslyn,robinsedlaczek/roslyn,zooba/roslyn,abock/roslyn,VSadov/roslyn,agocke/roslyn,antonssonj/roslyn,orthoxerox/roslyn,bartdesmet/roslyn,nguerrera/roslyn,jmarolf/roslyn,TyOverby/roslyn,jhendrixMSFT/roslyn,Maxwe11/roslyn,mavasani/roslyn,xasx/roslyn,VSadov/roslyn,gafter/roslyn,ErikSchierboom/roslyn,tvand7093/roslyn,tannergooding/roslyn,kelltrick/roslyn,MatthieuMEZIL/roslyn,mmitche/roslyn,cston/roslyn,mgoertz-msft/roslyn,jkotas/roslyn,Pvlerick/roslyn,Hosch250/roslyn,xasx/roslyn,AdamSpeight2008/roslyn-AdamSpeight2008,KevinRansom/roslyn,khyperia/roslyn,natidea/roslyn,budcribar/roslyn,leppie/roslyn,reaction1989/roslyn,ljw1004/roslyn,natgla/roslyn,KirillOsenkov/roslyn,yeaicc/roslyn,Shiney/roslyn,robinsedlaczek/roslyn,khyperia/roslyn,ljw1004/roslyn,rgani/roslyn,xoofx/roslyn,CaptainHayashi/roslyn,aelij/roslyn,yeaicc/roslyn,wvdd007/roslyn,ErikSchierboom/roslyn,tannergooding/roslyn,weltkante/roslyn,AlekseyTs/roslyn,KevinRansom/roslyn,swaroop-sridhar/roslyn,natidea/roslyn,CaptainHayashi/roslyn,AdamSpeight2008/roslyn-AdamSpeight2008,KirillOsenkov/roslyn,lorcanmooney/roslyn,KevinRansom/roslyn,tannergooding/roslyn,leppie/roslyn,abock/roslyn,VSadov/roslyn,tmat/roslyn,DustinCampbell/roslyn,AmadeusW/roslyn,genlu/roslyn,xoofx/roslyn,SeriaWei/roslyn,tmeschter/roslyn,physhi/roslyn,dpoeschl/roslyn,DustinCampbell/roslyn,TyOverby/roslyn,OmarTawfik/roslyn,rgani/roslyn,bkoelman/roslyn,dotnet/roslyn,amcasey/roslyn,reaction1989/roslyn,balajikris/roslyn,bbarry/roslyn,antonssonj/roslyn,ericfe-ms/roslyn,Pvlerick/roslyn,brettfo/roslyn,dotnet/roslyn,AlekseyTs/roslyn,CyrusNajmabadi/roslyn,dpoeschl/roslyn,vslsnap/roslyn,paulvanbrenk/roslyn,antonssonj/roslyn,bkoelman/roslyn,khellang/roslyn,a-ctor/roslyn,a-ctor/roslyn,AdamSpeight2008/roslyn-AdamSpeight2008,MichalStrehovsky/roslyn,shyamnamboodiripad/roslyn,AArnott/roslyn,yeaicc/roslyn,stephentoub/roslyn,brettfo/roslyn,jasonmalinowski/roslyn,reaction1989/roslyn,khellang/roslyn,mattscheffer/roslyn,stephentoub/roslyn,michalhosala/roslyn,tmeschter/roslyn,swaroop-sridhar/roslyn,srivatsn/roslyn,brettfo/roslyn,mattscheffer/roslyn,jeffanders/roslyn,dotnet/roslyn,michalhosala/roslyn,nguerrera/roslyn,jasonmalinowski/roslyn,diryboy/roslyn,sharadagrawal/Roslyn,Hosch250/roslyn,Shiney/roslyn