Remove extra blank line in ServiceTests.cs.twig

Author: Fellmonkey

templates/dotnet/Package.Tests/Services/ServiceTests.cs.twig

@@ -69,7 +69,6 @@ namespace {{ spec.title | caseUcfirst }}.Tests.Services
             var expectedResponse = new Dictionary<string, object>();
             {%~ endif %}
 
-
             {%~ if method.type == 'webAuth' %}
             _mockClient.Setup(c => c.Redirect(
                 It.IsAny<string>(),