Always grant activity recognition permission for location provider

Since gmscore will be the provider of activity recognition on the device, it doesn't make sense for the user to deny gmscore the permission.
We always grant the activity recognition permission similar to the location permission.

Bug: 111411340
Test: Settings shows permission is fixed by system
Change-Id: Iae77abf13e1639b4b76b592091d21b6d7705bbb5