Remove XamarinTfm support check

Commit migrated from https://github.com/dotnet/corefx/commit/07778aa8dd42b456f1f932f54e0dd2bf3890c597

diff --git a/src/libraries/System.ComponentModel.Composition.Registration/pkg/System.ComponentModel.Composition.Registration.pkgproj b/src/libraries/System.ComponentModel.Composition.Registration/pkg/System.ComponentModel.Composition.Registration.pkgproj
index c2f62c3..2186707 100644 (file)
--- a/src/libraries/System.ComponentModel.Composition.Registration/pkg/System.ComponentModel.Composition.Registration.pkgproj
+++ b/src/libraries/System.ComponentModel.Composition.Registration/pkg/System.ComponentModel.Composition.Registration.pkgproj
@@ -2,7 +2,7 @@
     <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
     <ItemGroup>
     <ProjectReference Include="..\ref\System.ComponentModel.Composition.Registration.csproj">
-      <SupportedFramework>netcoreapp3.0;net45;$(AllXamarinFrameworks)</SupportedFramework>
+      <SupportedFramework>netcoreapp3.0;net45</SupportedFramework>
     </ProjectReference>
     <ProjectReference Include="..\src\System.ComponentModel.Composition.Registration.csproj" />
     <InboxOnTargetFramework Include="net45">