clean up location_accuracy flag

The feature is now always enabled on S+ devices.

Bug: 294870972
Bug: 320229211
Test: atest LocationAccuracyTest
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:e65d302d69c03d9029cf9834074899da1a7790c4)
Merged-In: Ia2cbffe3714ea4edc3c3de67a9340e9088786dc6
Change-Id: Ia2cbffe3714ea4edc3c3de67a9340e9088786dc6
1 file changed