Location Unit tests

- Added the GnssStatus unit test
- Upgraded the runner to AndroidJunitRunner
- Removed the old non-working unit tests.

To run the tests, use any of this:
1. runtest frameworks-location
2. forrest test FrameworksLocationTests

Bug: 69375757
Test: runtest frameworks-location

Change-Id: Ia52a8ce51ab9334ad1b8dd1686303270ceca270b
diff --git a/location/Android.mk b/location/Android.mk
index feeb8ce..50509c6 100644
--- a/location/Android.mk
+++ b/location/Android.mk
@@ -14,4 +14,4 @@
 
 LOCAL_PATH := $(call my-dir)
 
-include $(call all-makefiles-under, $(LOCAL_PATH))
+include $(call all-subdir-makefiles, $(LOCAL_PATH))
\ No newline at end of file