Filter location updates and remove unused animator code

plugin-locationlayer/src/main/java/com/mapbox/mapboxsdk/plugins/locationlayer/LocationLayerAnimator.java

@@ -20,6 +20,8 @@
 
 final class LocationLayerAnimator {
 
+  private static final int ONE_SECOND = 1000;
+
   private final List<OnLayerAnimationsValuesChangeListener> layerListeners = new ArrayList<>();
   private final List<OnCameraAnimationsValuesChangeListener> cameraListeners = new ArrayList<>();
 
@@ -58,6 +60,10 @@ void feedNewLocation(@NonNull Location newLocation, @NonNull CameraPosition curr
       locationUpdateTimestamp = SystemClock.elapsedRealtime();
     }
 
+    if (invalidUpdateInterval()) {
+      return;
+    }
+
     LatLng previousLayerLatLng = getPreviousLayerLatLng();
     float previousLayerBearing = getPreviousLayerGpsBearing();
     LatLng previousCameraLatLng = currentCameraPosition.target;
@@ -179,6 +185,10 @@ void cancelAllAnimations() {
     cancelCameraCompassAnimations();
   }
 
+  private boolean invalidUpdateInterval() {
+    return (SystemClock.elapsedRealtime() - locationUpdateTimestamp) < ONE_SECOND;
+  }
+
   private LatLng getPreviousLayerLatLng() {
     LatLng previousLatLng;
     if (layerLatLngAnimator != null) {