Revert "Mute ReindexFailureTests test"

This reverts commit 16afbf91bb.

The issue was fixed in #52099

modules/reindex/src/test/java/org/elasticsearch/index/reindex/ReindexFailureTests.java

@@ -19,7 +19,6 @@
 
 package org.elasticsearch.index.reindex;
 
-import org.apache.lucene.util.LuceneTestCase.AwaitsFix;
 import org.elasticsearch.action.bulk.BulkItemResponse.Failure;
 import org.elasticsearch.action.index.IndexRequestBuilder;
 
@@ -38,7 +37,6 @@ import static org.hamcrest.Matchers.lessThanOrEqualTo;
 /**
  * Tests failure capturing and abort-on-failure behavior of reindex.
  */
-@AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/52021")
 public class ReindexFailureTests extends ReindexTestCase {
     public void testFailuresCauseAbortDefault() throws Exception {
         /*