Fixing CI build

test/Directory.Build.props

@@ -4,6 +4,8 @@
     <IsTestProject>true</IsTestProject>
     <CollectCoverage>true</CollectCoverage>
     <CoverletOutputFormat>Cobertura</CoverletOutputFormat>
+
+    <SignAssembly>false</SignAssembly>
   </PropertyGroup>
 
   <ItemGroup>
@@ -21,10 +23,6 @@
     <Using Include="Microsoft.VisualStudio.TestTools.UnitTesting" />
   </ItemGroup>
 
-  <ItemGroup>
-    <ProjectReference Include="$(SolutionDir)\src\Cloudflare\Cloudflare.csproj" />
-  </ItemGroup>
-
   <Import Project="$([MSBuild]::GetPathOfFileAbove('Directory.Build.props', '$(MSBuildThisFileDirectory)\..'))" />
 </Project>