Remove AssemblyFilter dead code as APTCA is not supported (#9863)

Author: h3xds1nz

src/Microsoft.DotNet.Wpf/src/PresentationFramework/MS/Internal/AppModel/AssemblyFilter.cs

@@ -106,7 +106,6 @@
     <Compile Include="MS\Internal\Annotations\XmlElementCollection.cs" />
     <Compile Include="MS\Internal\AppModel\AppModelKnownContentFactory.cs" />
     <Compile Include="MS\Internal\AppModel\AppSecurityManager.cs" />
-    <Compile Include="MS\Internal\AppModel\AssemblyFilter.cs" />
     <Compile Include="MS\Internal\AppModel\BamlStream.cs" />
     <Compile Include="MS\Internal\AppModel\ComGuids.cs" />
     <Compile Include="MS\Internal\AppModel\ContentFilePart.cs" />