Remove unnecessary InternalsVisibleTo reference to the test project

Author: rameel

src/Ramstack.FileProviders.Composition/Ramstack.FileProviders.Composition.csproj

@@ -35,10 +35,6 @@
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
   </PropertyGroup>
 
-  <ItemGroup>
-    <InternalsVisibleTo Include="Ramstack.FileProviders.Tests" />
-  </ItemGroup>
-
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.FileProviders.Abstractions" />
     <PackageReference Include="Microsoft.Extensions.FileProviders.Composite" />