mavproxy_example.py: Remove unused imports

Signed-off-by: Ryan Friedman <[email protected]>

Author: Ryanf55

MAVProxy/modules/mavproxy_example.py

@@ -11,16 +11,12 @@
 
 3. trim (or comment) out any functionality you do not need
 '''
+AP_FLAKE8_CLEAN
 
-import os
-import os.path
-import sys
 from pymavlink import mavutil
-import errno
 import time
 
 from MAVProxy.modules.lib import mp_module
-from MAVProxy.modules.lib import mp_util
 from MAVProxy.modules.lib import mp_settings