[Battery usage U] Remove 'Phone Idle' to avoid confusion

Bug: 252938706
Fix: 252938706
Test: manual
Change-Id: I0ad973718f77640839dbdf4ac5ca4241f01bdb79

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

@@ -162,7 +162,7 @@ public class PowerUsageFeatureProviderImpl implements PowerUsageFeatureProvider
     }
 
     @Override
-    public Set<CharSequence> getHideBackgroundUsageTimeSet(Context context) {
+    public Set<Integer> getHideSystemComponentSet(Context context) {
         return new ArraySet<>();
     }
 
@@ -171,6 +171,11 @@ public class PowerUsageFeatureProviderImpl implements PowerUsageFeatureProvider
         return new ArraySet<>();
     }
 
+    @Override
+    public Set<CharSequence> getHideBackgroundUsageTimeSet(Context context) {
+        return new ArraySet<>();
+    }
+
     @Override
     public Set<CharSequence> getIgnoreScreenOnTimeTaskRootSet(Context context) {
         return new ArraySet<>();