Fix linter warnings in examples/gps/main.py
Warnings:
* F401 kivy.clock.Clock imported but unused.
* E303 too many blank lines.
@@ -2,7 +2,7 @@ from kivy.lang import Builder
from plyer import gps
from kivy.app import App
from kivy.properties import StringProperty
-from kivy.clock import Clock, mainthread
+from kivy.clock import mainthread
from kivy.utils import platform
kv = '''
@@ -33,7 +33,6 @@ class GpsTest(App):
gps_location = StringProperty()
gps_status = StringProperty('Click Start to get GPS location updates')
-
def request_android_permissions(self):
"""
Since API 23, Android requires permission to be requested at runtime.
