Remove unnecessary functions from AssistGestureFeatureProvider

Fixes: 62945918

Test: make -j RunSettingsRoboTests && manual
Change-Id: I13438e6741a3398d06917b45f098c13df7dff97e

src/com/android/settings/gestures/AssistGestureFeatureProvider.java

@@ -32,9 +32,6 @@ public interface AssistGestureFeatureProvider {
     /** Returns true if the sensor is available. */
     boolean isSensorAvailable(Context context);
 
-    /** Returns the resource */
-    int getPreferenceResourceId();
-
     /** Returns a list of additional preference controllers */
     List<AbstractPreferenceController> getControllers(Context context, Lifecycle lifecycle);