Revert "QS: let's welcome LocationTile to 4.4"

This reverts commit 59df26421fbb5269e07f62535b7d4bd2c2fbcfe2.
Update the GPS tile to use the appropriate location modes

With 4.4, there were new location modes this tile did not support
Update it to turn the GPS on/off without changing the network-based location
option, and use a new icon for battery saving mode.

The tile will now either toggle between high accuracy and battery saving,
or location off and device sensors only.

Change-Id: Ifdfb9832c77671ab1f0c415ea2c25dfee2888578