Ensure that `Microsoft.Build.*` assemblies are _really_ removed by build output
Ensure that `Microsoft.Build.*` assemblies are _really_ removed by build output

Set `ExcludeAssets="Runtime"` on the `Microsoft.Build.*` in addition to `PrivateAssets="All"`
to stop these assemblies from being copied to the build output.

DustinCampbell/omnisharp-roslyn,OmniSharp/omnisharp-roslyn,OmniSharp/omnisharp-roslyn,DustinCampbell/omnisharp-roslyn