Don't reference implicit Microsoft.Net.Compilers.Toolset directly.

- It's now included implicitly from the SDK.

Author: N. Taylor Mullen

Directory.Build.targets

@@ -7,12 +7,4 @@
   <PropertyGroup>
     <BundledNETCorePlatformsPackageVersion>$(MicrosoftNETCorePlatformsPackageVersion)</BundledNETCorePlatformsPackageVersion>
   </PropertyGroup>
-
-  <ItemGroup>
-    <!-- Track compiler separately from Arcade.-->
-    <PackageReference Include="Microsoft.Net.Compilers.Toolset"
-        Version="$(MicrosoftNetCompilersToolsetPackageVersion)"
-        PrivateAssets="all"
-        IsImplicitlyDefined="true" />
-  </ItemGroup>
 </Project>

eng/Version.Details.xml

@@ -64,9 +64,5 @@
       <Uri>https://github.com/dotnet/arcade</Uri>
       <Sha>fb27fd4d8a2b67d4333e33d4b898c65171c9f3c1</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="3.3.0-beta2-19365-06">
-      <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>3136330cb9714fec70a2ed0141469ed03832c766</Sha>
-    </Dependency>
   </ToolsetDependencies>
 </Dependencies>

eng/Versions.props

@@ -41,10 +41,6 @@
       https://vside.myget.org/F/vsmac/api/v3/index.json;
       https://vside.myget.org/F/devcore/api/v3/index.json;
     </RestoreSources>
-    <RestoreSources Condition="'$(DotNetBuildOffline)' != 'true' AND $(MicrosoftNetCompilersToolsetPackageVersion.Contains('-')) ">
-      $(RestoreSources);
-      https://dotnet.myget.org/F/roslyn/api/v3/index.json;
-    </RestoreSources>
   </PropertyGroup>
   <!--
 
@@ -70,8 +66,6 @@
     <SystemDiagnosticsDiagnosticSourcePackageVersion>4.6.0-preview8.19364.1</SystemDiagnosticsDiagnosticSourcePackageVersion>
     <SystemTextEncodingsWebPackageVersion>4.6.0-preview8.19364.1</SystemTextEncodingsWebPackageVersion>
     <SystemReflectionMetadataPackageVersion>1.7.0-preview8.19364.1</SystemReflectionMetadataPackageVersion>
-    <!-- Packages from dotnet/roslyn -->
-    <MicrosoftNetCompilersToolsetPackageVersion>3.3.0-beta2-19365-06</MicrosoftNetCompilersToolsetPackageVersion>
   </PropertyGroup>
   <PropertyGroup Label="Dependency version settings">
     <!--