Decouple EditorFeatures.Test.Utilities from VS services (#78821)

Microsoft.CodeAnalysis.EditorFeatures.Test.Utilities depended on
Microsoft.VisualStudio.Editor which brought along various VS layer
services. Further, we had some stub implementations of those VS services
there. Digging into this this coupling wasn't really necessary:

1. There were EditorFeatures tests using the editor adapters stub, but
those tests pass just fine without it, so that was easy to move to the
VS specific tests.
2. StubVsServiceExporters didn't appear to be used either, so unsure why
those were in this layer at all. Those were also moved.
3. We had implementations of some settings services, which it's easier
to just delete and remove the options persister from the composition in
the first place. This also better ensures that we don't have code that
might try creating registry keys from ILocalRegistry which we absolutely
don't want.

Author: jasonmalinowski

src/EditorFeatures/Test2/IntelliSense/VisualBasicCompletionCommandHandlerTests.vb

@@ -2607,7 +2607,7 @@ Class C
     End Sub
 End Class
 }]]></Document>,
-                  extraExportedTypes:={GetType(MockSnippetInfoService), GetType(SnippetCompletionProvider), GetType(StubVsEditorAdaptersFactoryService)}.ToList())
+                  extraExportedTypes:={GetType(MockSnippetInfoService), GetType(SnippetCompletionProvider)}.ToList())
 
                 state.Workspace.GlobalOptions.SetGlobalOption(CompletionOptionsStorage.SnippetsBehavior, LanguageNames.VisualBasic, SnippetsRule.AlwaysInclude)
 
@@ -2628,7 +2628,7 @@ Class C
     End Sub
 End Class
 }]]></Document>,
-                  extraExportedTypes:={GetType(MockSnippetInfoService), GetType(SnippetCompletionProvider), GetType(StubVsEditorAdaptersFactoryService)}.ToList())
+                  extraExportedTypes:={GetType(MockSnippetInfoService), GetType(SnippetCompletionProvider)}.ToList())
 
                 state.Workspace.GlobalOptions.SetGlobalOption(CompletionOptionsStorage.SnippetsBehavior, LanguageNames.VisualBasic, SnippetsRule.AlwaysInclude)
 
@@ -2650,7 +2650,7 @@ Class C
     End Sub
 End Class
 }]]></Document>,
-                  extraExportedTypes:={GetType(MockSnippetInfoService), GetType(SnippetCompletionProvider), GetType(StubVsEditorAdaptersFactoryService)}.ToList())
+                  extraExportedTypes:={GetType(MockSnippetInfoService), GetType(SnippetCompletionProvider)}.ToList())
 
                 state.Workspace.GlobalOptions.SetGlobalOption(CompletionOptionsStorage.SnippetsBehavior, LanguageNames.VisualBasic, SnippetsRule.AlwaysInclude)
 

src/EditorFeatures/TestUtilities/Microsoft.CodeAnalysis.EditorFeatures.Test.Utilities.csproj

@@ -22,9 +22,7 @@
   <ItemGroup>
     <PackageReference Include="Moq" />
     <PackageReference Include="BasicUndo" />
-    <PackageReference Include="Microsoft.VisualStudio.Editor" />
     <PackageReference Include="Microsoft.VisualStudio.Platform.VSEditor" />
-    <PackageReference Include="Microsoft.VisualStudio.Text.Internal" />
   </ItemGroup>
   <ItemGroup>
     <InternalsVisibleTo Include="IdeBenchmarks" />