don't convert metadata reference to project reference. this workspace...

don't convert metadata reference to project reference. this workspace replicates workspace in host (VS), it is a bug that it tried to convert metadata reference to project reference.

also, this sometimes caused VS to crash since if a user had circular reference by metadata reference, by converting metadata reference to project reference, we are introducing circular p2p reference in solution, and workspace crash.

src/Workspaces/Remote/Core/Services/RemoteWorkspace.cs

@@ -57,7 +57,6 @@ public Solution AddSolution(SolutionInfo solutionInfo)
             lock (_gate)
             {
                 this.OnSolutionAdded(solutionInfo);
-                this.UpdateReferencesAfterAdd();
 
                 return this.CurrentSolution;
             }
@@ -81,8 +80,6 @@ public Solution UpdateSolution(Solution solution)
                 var newSolution = this.SetCurrentSolution(solution);
                 this.RaiseWorkspaceChangedEventAsync(WorkspaceChangeKind.SolutionChanged, oldSolution, newSolution);
 
-                this.UpdateReferencesAfterAdd();
-
                 return this.CurrentSolution;
             }
         }