[generic] comment a test covered now by AmericasTestKitchenIE
[generic] comment a test covered now by AmericasTestKitchenIE

ozburo/youtube-dl,spvkgn/youtube-dl,spvkgn/youtube-dl,Tatsh/youtube-dl,rg3/youtube-dl,ozburo/youtube-dl,rg3/youtube-dl,Tatsh/youtube-dl