Remove DiagnosticSource reference from Microsoft.Extensions.Logging.Abstractions (#110458)

This was inadvertently added in backport but was not needed.

Author: ericstj

src/libraries/Microsoft.Extensions.Logging.Abstractions/src/Microsoft.Extensions.Logging.Abstractions.csproj

@@ -5,8 +5,8 @@
     <EnableDefaultItems>true</EnableDefaultItems>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <IsPackable>true</IsPackable>
-    <GeneratePackageOnBuild>false</GeneratePackageOnBuild>
-    <ServicingVersion>2</ServicingVersion>
+    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+    <ServicingVersion>3</ServicingVersion>
     <PackageDescription>Logging abstractions for Microsoft.Extensions.Logging.
 
 Commonly Used Types:
@@ -40,10 +40,6 @@ Microsoft.Extensions.Logging.Abstractions.NullLogger</PackageDescription>
     <PackageReference Include="System.Memory" Version="$(SystemMemoryVersion)" />
   </ItemGroup>
 
-  <ItemGroup Condition="'$(TargetFramework)' != '$(NetCoreAppCurrent)'">
-    <ProjectReference Include="$(LibrariesProjectRoot)System.Diagnostics.DiagnosticSource\src\System.Diagnostics.DiagnosticSource.csproj" />
-  </ItemGroup>
-
   <ItemGroup>
     <ProjectReference Include="$(LibrariesProjectRoot)Microsoft.Extensions.DependencyInjection.Abstractions\src\Microsoft.Extensions.DependencyInjection.Abstractions.csproj" />