cleanup of csproj

Author: egil

src/AngleSharp.Diffing/Egil.AngleSharp.Diffing.csproj

@@ -12,12 +12,6 @@
 	<PackageDownload Include="Microsoft.NETCore.App.Ref" Version="[$(AnnotatedReferenceAssemblyVersion)]" />
   </ItemGroup>
 
-  <ItemGroup>
-    <Compile Remove="Matchers\**" />
-    <EmbeddedResource Remove="Matchers\**" />
-    <None Remove="Matchers\**" />
-  </ItemGroup>
-
   <ItemGroup>
     <PackageReference Include="AngleSharp" Version="$(AngleSharpVersion)" />
     <PackageReference Include="AngleSharp.Css" Version="$(AngleSharpVersion)" />