Remove unused imports

Author: Hmnt39

ExtractorUtils.Test/unit/LoggingTest.cs

@@ -1,14 +1,11 @@
 using System.Diagnostics;
 using System;
 using System.IO;
-using System.Collections.Generic;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Xunit;
-using Xunit.Abstractions;
 using Cognite.Extractor.Logging;
 using Cognite.Extractor.Utils;
-using Serilog;
 
 namespace ExtractorUtils.Test.Unit
 {