Remove the VideoSupport flag because AppVeyor machines do not support it.
Remove the VideoSupport flag because AppVeyor machines do not support it.

wieslawsoltes/Perspex,grokys/Perspex,jkoritzinsky/Avalonia,wieslawsoltes/Perspex,akrisiun/Perspex,jkoritzinsky/Avalonia,AvaloniaUI/Avalonia,AvaloniaUI/Avalonia,MrDaedra/Avalonia,AvaloniaUI/Avalonia,MrDaedra/Avalonia,SuperJMN/Avalonia,SuperJMN/Avalonia,AvaloniaUI/Avalonia,SuperJMN/Avalonia,jkoritzinsky/Avalonia,Perspex/Perspex,Perspex/Perspex,SuperJMN/Avalonia,jkoritzinsky/Avalonia,SuperJMN/Avalonia,jkoritzinsky/Avalonia,AvaloniaUI/Avalonia,wieslawsoltes/Perspex,wieslawsoltes/Perspex,AvaloniaUI/Avalonia,wieslawsoltes/Perspex,jkoritzinsky/Avalonia,AvaloniaUI/Avalonia,wieslawsoltes/Perspex,grokys/Perspex,jazzay/Perspex,wieslawsoltes/Perspex,jkoritzinsky/Perspex,SuperJMN/Avalonia,jkoritzinsky/Avalonia,SuperJMN/Avalonia