remove explicit queue_size warning

shared_demo/scripts/test_ros.py

@@ -14,7 +14,7 @@ if __name__ == "__main__":
     rospy.init_node('test_ros')
 
     # Create publisher and set up for timer
-    pub = rospy.Publisher('/current_time', Time)
+    pub = rospy.Publisher('/current_time', Time, queue_size=10)
     rospy.Timer(rospy.Duration(1), pub_time)
     rospy.loginfo('I can talk to roscore!')
     rospy.loginfo('Publishing current time to /current_time')