Remove DeviceIdleController location prefetching

This prefetching behavior interrupts location power saving measures
causing increased power usage, and appears to serve no purpose (the
locations are dropped and never used). The original intention appears to
have been to prime the location service prior to entering doze in some
circumstances, but this has never been useful to the location service.

Bug: 332770178
Test: pre-existing
Change-Id: I26d4e5fb6dfa6fc578068bbfc17b272d6140fc96