Cleanup unused code

Author: stevejgordon

tests/Tests/TestValueHelper.cs

@@ -1,4 +1,4 @@
-// Licensed to Elasticsearch B.V under one or more agreements.
+// Licensed to Elasticsearch B.V under one or more agreements.
 // Elasticsearch B.V licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information
 
@@ -13,8 +13,6 @@ public static class TestValueHelper
 
 		public static DateTime FixedDate { get; } = new DateTime(2015, 06, 06, 12, 01, 02, 123);
 
-		public static string PercolatorType => InRange("<5.0.0-alpha1") ? ".percolator" : "query";
-
 		private static bool InRange(string range) => TestConfiguration.Instance.ElasticsearchVersion.InRange(range);
 
 		public static object Dependant(object builtin, object source) => TestConfiguration.Instance.Random.SourceSerializer ? source : builtin;