Removed the waste line

Author: giwa

python/pyspark/java_gateway.py

@@ -78,10 +78,7 @@ def run(self):
         EchoOutputThread(proc.stdout).start()
 
     # Connect to the gateway
-    # If start_callback_server is True, it looks like callback server is not killed
-    # process is hang up and test case does not move forward.
-    #gateway = JavaGateway(GatewayClient(port=gateway_port), auto_convert=False, start_callback_server=True)
-    gateway = JavaGateway(GatewayClient(port=gateway_port), auto_convert=False, start_callback_server=False)
+    gateway = JavaGateway(GatewayClient(port=gateway_port), auto_convert=False)
 
     # Import the classes used by PySpark
     java_import(gateway.jvm, "org.apache.spark.SparkConf")