Apply suggestions from code review

Remove redundant reference.

Author: martincostello

tests/TodoApp.Tests/TodoApp.Tests.csproj

@@ -12,7 +12,6 @@
     <PackageReference Include="MartinCostello.Logging.XUnit.v3" Version="0.6.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="10.0.0-preview.4.25258.110" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
-    <PackageReference Include="Microsoft.OpenApi.Readers" Version="2.0.0-preview7" />
     <PackageReference Include="Microsoft.Playwright" Version="1.52.0" />
     <PackageReference Include="Verify.XunitV3" Version="30.1.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.0" />