Clean up unused files for Battery Usage in SettingsGoogle, which have

been moved into Settings.

Test: make RunSettingsRoboTests
Bug: 256123455
Change-Id: I21fe684b9b3a2a748c5d10353e68e15ddf281838

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

@@ -24,10 +24,8 @@ import android.util.ArraySet;
 import android.util.SparseIntArray;
 
 import com.android.internal.util.ArrayUtils;
-import com.android.settings.fuelgauge.batteryusage.BatteryHistEntry;
 import com.android.settingslib.fuelgauge.Estimate;
 
-import java.util.Map;
 import java.util.Set;
 
 /** Implementation of {@code PowerUsageFeatureProvider} */
@@ -122,11 +120,6 @@ public class PowerUsageFeatureProviderImpl implements PowerUsageFeatureProvider
         return null;
     }
 
-    @Override
-    public String getAdvancedUsageScreenInfoString() {
-        return null;
-    }
-
     @Override
     public boolean getEarlyWarningSignal(Context context, String id) {
         return false;
@@ -158,11 +151,6 @@ public class PowerUsageFeatureProviderImpl implements PowerUsageFeatureProvider
         return false;
     }
 
-    @Override
-    public Map<Long, Map<String, BatteryHistEntry>> getBatteryHistory(Context context) {
-        return null;
-    }
-
     @Override
     public Set<CharSequence> getHideBackgroundUsageTimeSet(Context context) {
         return new ArraySet<>();