Remove the legacy getReplacingActivity() method from feature provider

Bug: 195306545
Test: make RunSettingsRoboTests
Change-Id: Ie7ae30ad671ec2ee2659e64ee4f191728edab4e8

src/com/android/settings/fuelgauge/BatterySettingsFeatureProvider.java

@@ -18,14 +18,7 @@ package com.android.settings.fuelgauge;
 
 import android.content.ComponentName;
 
-/**
- * Feature provider for battery settings usage.
- */
+/** Feature provider for battery settings usage. */
 public interface BatterySettingsFeatureProvider {
 
-    /**
-     * Get replacement activity for a given activity or fragment path.
-     */
-    ComponentName getReplacingActivity(ComponentName originalActivity);
-
 }