Remove ILocationProvider.isEnabled() binder call and use cached value instead.

Change-Id: Id6a9f6d2e2f5cc5810a2beeb0f869f06e2d18860
Signed-off-by: Mike Lockwood <lockwood@android.com>

location/java/com/android/internal/location/MockProvider.java

@@ -95,10 +95,6 @@ public class MockProvider extends ILocationProvider.Stub {
         return mStatusUpdateTime;
     }
 
-    public boolean isEnabled() {
-        return mEnabled;
-    }
-
     public int getAccuracy() {
         return mAccuracy;
     }