diff --git a/Stream/measure_rtl/delayClientA_SUB.py b/Stream/measure_rtl/delayClientA_SUB.py
index 6df1c62..0903987 100644
--- a/Stream/measure_rtl/delayClientA_SUB.py
+++ b/Stream/measure_rtl/delayClientA_SUB.py
@@ -3,10 +3,8 @@
 import paho.mqtt.client as mqtt
 import os
 import sys
-import time
 import proto.flight_information_pb2 as flight_information_pb2
 import proto.flyformatioln_pb2 as flyformatioln_pb2
-from std_msgs.msg import String
 import logging
 import utils
 from utils.protoJson_delayClientA_SUB import Json_msg
diff --git a/Stream/measure_rtl/delayClientB.py b/Stream/measure_rtl/delayClientB.py
index f95afdb..abac703 100644
--- a/Stream/measure_rtl/delayClientB.py
+++ b/Stream/measure_rtl/delayClientB.py
@@ -3,12 +3,9 @@
 import paho.mqtt.client as mqtt
 import os
 import sys
-import time
 import utils
 import proto.flight_information_pb2 as flight_information_pb2
 import proto.flyformatioln_pb2 as flyformatioln_pb2
-import rospy
-from std_msgs.msg import String
 import logging
 from utils.protoJson_delayClientB_SUB import Json_msg
 from utils.protoJson_delayClientB_SUB import Proto_msg