Don't register search response listener in transport clients

Small fix for https://github.com/elastic/elasticsearch/pull/22682

core/src/main/java/org/elasticsearch/search/SearchModule.java

@@ -298,7 +298,9 @@ public class SearchModule {
         registerPipelineAggregations(plugins);
         registerFetchSubPhases(plugins);
         registerSearchExts(plugins);
+        if (false == transportClient) {
           registerSearchResponseListeners(plugins);
+        }
         registerShapes();
     }