Simplify CSharpRequiredLanguageVersion (#51881)
Simplify CSharpRequiredLanguageVersion (#51881)


sharwell/roslyn,bartdesmet/roslyn,weltkante/roslyn,wvdd007/roslyn,physhi/roslyn,sharwell/roslyn,sharwell/roslyn,AmadeusW/roslyn,bartdesmet/roslyn,wvdd007/roslyn,CyrusNajmabadi/roslyn,wvdd007/roslyn,KevinRansom/roslyn,physhi/roslyn,shyamnamboodiripad/roslyn,shyamnamboodiripad/roslyn,diryboy/roslyn,CyrusNajmabadi/roslyn,jasonmalinowski/roslyn,weltkante/roslyn,AmadeusW/roslyn,eriawan/roslyn,dotnet/roslyn,eriawan/roslyn,jasonmalinowski/roslyn,KevinRansom/roslyn,physhi/roslyn,mavasani/roslyn,shyamnamboodiripad/roslyn,diryboy/roslyn,dotnet/roslyn,weltkante/roslyn,jasonmalinowski/roslyn,mavasani/roslyn,KevinRansom/roslyn,mavasani/roslyn,AmadeusW/roslyn,diryboy/roslyn,CyrusNajmabadi/roslyn,dotnet/roslyn,bartdesmet/roslyn,eriawan/roslyn