Revert "DeskClock: User-defined world cities - Jorge Ruesga<jorge@ruesga.com>"

This reverts commit 7a38c107cb42eb0ecffdd72dbef2bd63a3ae3c7f.

Conflicts:
	res/drawable-xhdpi/ic_gps_disabled.png
	res/drawable-xhdpi/ic_gps_off.png
	res/drawable-xhdpi/ic_gps_on.png
	res/values/strings.xml
DeskClock: User-defined world cities - CM

Support for add user-defined cities to the world clock

Patchset 2: Added GPS query
Patchset 3: Added GPS drawables
            Call requestGpsLocation in background
Patchset 4: Added timezone resolution through Google Api
            Added Marco suggestions
            Rebased
Patchset 5: Remove trailing whitespaces
Patchset 6: Moved cm strings to the end of the file
            Rebased
Patchset 7: Export DbCityProvider. Enforce write permission to DeskClock only
Patchset 8: Fix FC when there is no default timezone
            Add content description to GPS button
            Don't create a new city record of city name + city tz already exists

Change-Id: Ibb6febc674ca536728367588437fbdacaa437ff3
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>

Conflicts:
	res/values/strings.xml