Remove explicit ownership of LiveShare
Remove explicit ownership of LiveShare

GitHub is flagging this since these people don't have current
permissions to the repo; in either case we don't have separate ownership
anymore.

jasonmalinowski/roslyn,bartdesmet/roslyn,shyamnamboodiripad/roslyn,jasonmalinowski/roslyn,shyamnamboodiripad/roslyn,bartdesmet/roslyn,dotnet/roslyn,dotnet/roslyn,mavasani/roslyn,bartdesmet/roslyn,mavasani/roslyn,shyamnamboodiripad/roslyn,mavasani/roslyn,CyrusNajmabadi/roslyn,CyrusNajmabadi/roslyn,dotnet/roslyn,jasonmalinowski/roslyn,CyrusNajmabadi/roslyn