Sort imports

Having consistent import order will reduce chance of merge
conflict between internal and external master

Test: rebuild
Change-Id: I0b1a170967ddcce7f388603fd521f6ed1eeba30b

src/com/android/settings/deletionhelper/ActivationWarningFragment.java

@@ -19,11 +19,11 @@ package com.android.settings.deletionhelper;
 import android.app.Dialog;
 import android.os.Bundle;
 
-import com.android.settings.R;
-
 import androidx.appcompat.app.AlertDialog;
 import androidx.fragment.app.DialogFragment;
 
+import com.android.settings.R;
+
 /**
  * Fragment to warn the user about activating the storage manager.
  */