Remove unused namespaces

Author: paulirwin

src/Lucene.Net.TestFramework/Analysis/BaseTokenStreamTestCase.cs

@@ -5,7 +5,6 @@
 using Lucene.Net.Documents;
 using Lucene.Net.Index;
 using Lucene.Net.Support;
-using Lucene.Net.Support.Threading;
 using Lucene.Net.Util;
 using RandomizedTesting.Generators;
 using System;

src/Lucene.Net.TestFramework/Index/BaseDocValuesFormatTestCase.cs

@@ -7,14 +7,11 @@
 using Lucene.Net.Index.Extensions;
 using Lucene.Net.Search;
 using Lucene.Net.Store;
-using Lucene.Net.Support;
-using Lucene.Net.Support.Threading;
 using Lucene.Net.Util;
 using RandomizedTesting.Generators;
 using System;
 using System.Collections.Generic;
 using System.Globalization;
-using System.Threading;
 using static Lucene.Net.Index.TermsEnum;
 using Assert = Lucene.Net.TestFramework.Assert;
 using JCG = J2N.Collections.Generic;

src/Lucene.Net.Tests/Index/TestBinaryDocValuesUpdates.cs

@@ -10,13 +10,11 @@
 using Lucene.Net.Search;
 using Lucene.Net.Store;
 using Lucene.Net.Support;
-using Lucene.Net.Support.Threading;
 using NUnit.Framework;
 using RandomizedTesting.Generators;
 using System;
 using System.Collections.Generic;
 using System.IO;
-using System.Threading;
 using Assert = Lucene.Net.TestFramework.Assert;
 using JCG = J2N.Collections.Generic;
 

src/Lucene.Net.Tests/Index/TestDocValuesIndexing.cs

@@ -3,10 +3,8 @@
 using Lucene.Net.Documents;
 using Lucene.Net.Index.Extensions;
 using Lucene.Net.Search;
-using Lucene.Net.Support.Threading;
 using NUnit.Framework;
 using System;
-using System.Threading;
 using Assert = Lucene.Net.TestFramework.Assert;
 
 namespace Lucene.Net.Index

src/Lucene.Net.Tests/Index/TestDocValuesWithThreads.cs

@@ -2,12 +2,10 @@
 using Lucene.Net.Documents;
 using Lucene.Net.Index.Extensions;
 using Lucene.Net.Search;
-using Lucene.Net.Support.Threading;
 using NUnit.Framework;
 using RandomizedTesting.Generators;
 using System;
 using System.Collections.Generic;
-using System.Threading;
 using Assert = Lucene.Net.TestFramework.Assert;
 using JCG = J2N.Collections.Generic;
 

src/Lucene.Net.Tests/Index/TestIndexWriter.cs

@@ -10,7 +10,6 @@
 using Lucene.Net.Index.Extensions;
 using Lucene.Net.Search;
 using Lucene.Net.Support;
-using Lucene.Net.Support.Threading;
 using Lucene.Net.Util;
 using NUnit.Framework;
 using RandomizedTesting.Generators;

src/Lucene.Net.Tests/Index/TestIndexWriterDelete.cs

@@ -5,7 +5,6 @@
 using Lucene.Net.Documents;
 using Lucene.Net.Index.Extensions;
 using Lucene.Net.Store;
-using Lucene.Net.Support;
 using Lucene.Net.Support.IO;
 using Lucene.Net.Util;
 using NUnit.Framework;
@@ -18,7 +17,6 @@
 using JCG = J2N.Collections.Generic;
 // ReSharper disable once RedundantUsingDirective - keep until we have an analyzer to look out for accidental NUnit asserts
 using Assert = Lucene.Net.TestFramework.Assert;
-using Lucene.Net.Support.Threading;
 
 namespace Lucene.Net.Index
 {

src/Lucene.Net.Tests/Index/TestIndexWriterThreadsToSegments.cs

@@ -6,10 +6,8 @@
 using Lucene.Net.Documents;
 using Lucene.Net.Index.Extensions;
 using Lucene.Net.Store;
-using Lucene.Net.Support.Threading;
 using Lucene.Net.Util;
 using NUnit.Framework;
-using RandomizedTesting.Generators;
 using System;
 using System.Collections.Generic;
 using System.Threading;

src/Lucene.Net.Tests/Index/TestMixedDocValuesUpdates.cs

@@ -3,12 +3,10 @@
 using Lucene.Net.Documents;
 using Lucene.Net.Index.Extensions;
 using Lucene.Net.Support;
-using Lucene.Net.Support.Threading;
 using NUnit.Framework;
 using RandomizedTesting.Generators;
 using System;
 using System.Collections.Generic;
-using System.Threading;
 using Assert = Lucene.Net.TestFramework.Assert;
 using JCG = J2N.Collections.Generic;
 

src/Lucene.Net.Tests/Index/TestNumericDocValuesUpdates.cs

@@ -3,12 +3,10 @@
 using Lucene.Net.Documents;
 using Lucene.Net.Index.Extensions;
 using Lucene.Net.Support;
-using Lucene.Net.Support.Threading;
 using NUnit.Framework;
 using RandomizedTesting.Generators;
 using System;
 using System.Collections.Generic;
-using System.Threading;
 using Assert = Lucene.Net.TestFramework.Assert;
 using JCG = J2N.Collections.Generic;