location: Remove obsolete fake provider support.

Now that we have GPS support in the emulator and public APIs for mock providers,
the fake provider support is no longer needed.

Signed-off-by: Mike Lockwood <lockwood@android.com>

location/java/android/location/LocationManager.java

@@ -103,9 +103,6 @@ public class LocationManager {
      */
     public static final String KEY_LOCATION_CHANGED = "location";
 
-    /** @hide -- does this belong here? */
-    public static final String PROVIDER_DIR = "/data/location";
-
     /** @hide */
     public static final String SYSTEM_DIR = "/data/system/location";