remove apicompat reference to net461 (Azure#49893)

* remove apicompat reference to net461

* remove net472 compat override

* add monitor back

Author: m-nash

sdk/core/Azure.Core/src/Azure.Core.csproj

@@ -12,8 +12,6 @@
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <EnableClientSdkAnalyzers>true</EnableClientSdkAnalyzers>
     <EnableBannedApiAnalyzers>false</EnableBannedApiAnalyzers>
-    <ApiCompatBaselineTargetFramework Condition="'$(TargetFramework)' == 'net462'">net461</ApiCompatBaselineTargetFramework>
-    <ApiCompatBaselineTargetFramework Condition="'$(TargetFramework)' == 'net472'">net461</ApiCompatBaselineTargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
@@ -31,11 +29,6 @@
     <PackageReference Include="System.Memory.Data" />
   </ItemGroup>
 
-  <ItemGroup Condition="'$(TargetFramework)' == 'net461'">
-    <PackageReference Include="System.Runtime.InteropServices.RuntimeInformation" />
-    <PackageReference Include="System.Net.Http" />
-  </ItemGroup>
-
   <ItemGroup Condition="'$(TargetFramework)' == 'net472'">
     <Reference Include="System.Net.Http" />
   </ItemGroup>