Remove redundant Microsoft.Testing.Extensions.CodeCoverage reference

Author: matt-edmondson

AppDataStorage.Test/AppDataStorage.Test.csproj

@@ -12,7 +12,6 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Testing.Extensions.CodeCoverage" />
     <ProjectReference Include="..\AppDataStorage\AppDataStorage.csproj" />
     <PackageReference Include="TestableIO.System.IO.Abstractions.TestingHelpers" />
   </ItemGroup>