[TEST] remove unused ElasticsearchIntegrationTest#afterTestFailed method

src/test/java/org/elasticsearch/test/ElasticsearchIntegrationTest.java

@@ -675,13 +675,6 @@ public abstract class ElasticsearchIntegrationTest extends ElasticsearchTestCase
         }
     }
 
-    /**
-     * Allows to execute some additional task after a test is failed, right after we cleared the clusters
-     */
-    protected void afterTestFailed() {
-
-    }
-
     public static TestCluster cluster() {
         return currentCluster;
     }

src/test/java/org/elasticsearch/test/rest/ElasticsearchRestTestCase.java

@@ -284,12 +284,6 @@ public abstract class ElasticsearchRestTestCase extends ElasticsearchIntegration
                 testCandidate.getTestSection().getSkipSection().skip(restTestExecutionContext.esVersion()));
     }
 
-    @Override
-    protected void afterTestFailed() {
-        //after we reset the global cluster, we have to make sure the client gets re-initialized too
-        restTestExecutionContext.resetClient();
-    }
-
     private static String buildSkipMessage(String description, SkipSection skipSection) {
         StringBuilder messageBuilder = new StringBuilder();
         if (skipSection.isVersionCheck()) {

src/test/java/org/elasticsearch/test/rest/RestTestExecutionContext.java

@@ -125,11 +125,6 @@ public class RestTestExecutionContext implements Closeable {
         }
     }
 
-    public void resetClient() {
-        restClient.close();
-        restClient = null;
-    }
-
     /**
      * Clears the last obtained response and the stashed fields
      */