Remove ACCESS_COARSE_LOCATION permission checking

- The calling package needs ACCESS_FINE_LOCATION permission to get WiFi
result data.

- The ACCESS_COARSE_LOCATION permission is not allowed.

Bug: 185126813
Test: manual test
make RunSettingsRoboTests ROBOTEST_FILTER=WifiDialogActivityTest

Change-Id: I2c9013a74d173066270b422ae2179b0d1018f2d7