Make the time zone test1 APEX uninstallable

Make the time zone test1 APEX uninstallable so that it won't be
put in the /system image alongside the real one - it's only intended
for use during tests.

Bug: 120960303
Test: build only
Change-Id: Iebbd1e42c60c984eac9868ae15c58e82c838507f
1 file changed