Remove LOCATION_PROVIDERS_ALLOWED reads

Remove all reads of LOCATION_PROVIDERS_ALLOWED as part of deprecating
the field. Field will still be updated for legacy clients, but any
writes into the field by clients will no longer be respected by
LocationManagerService.

Test: presubmits
Change-Id: I07a15f08d9ae490407bb93ec1ca21f34268e0330
2 files changed