And another one

Author: DaveCTurner

x-pack/plugin/logstash/src/main/java/org/elasticsearch/xpack/logstash/rest/RestDeletePipelineAction.java

@@ -16,7 +16,6 @@
 import org.elasticsearch.rest.Scope;
 import org.elasticsearch.rest.ServerlessScope;
 import org.elasticsearch.rest.action.RestActionListener;
-import org.elasticsearch.xcontent.XContentType;
 import org.elasticsearch.xpack.logstash.action.DeletePipelineAction;
 import org.elasticsearch.xpack.logstash.action.DeletePipelineRequest;
 import org.elasticsearch.xpack.logstash.action.DeletePipelineResponse;
@@ -49,7 +48,7 @@ protected RestChannelConsumer prepareRequest(RestRequest request, NodeClient cli
                 @Override
                 protected void processResponse(DeletePipelineResponse deletePipelineResponse) {
                     final RestStatus status = deletePipelineResponse.isDeleted() ? RestStatus.OK : RestStatus.NOT_FOUND;
-                    channel.sendResponse(new RestResponse(status, XContentType.JSON.mediaType(), BytesArray.EMPTY));
+                    channel.sendResponse(new RestResponse(status, RestResponse.TEXT_CONTENT_TYPE, BytesArray.EMPTY));
                 }
             }
         );