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/network/ApnPreference.java

@@ -30,11 +30,11 @@ import android.widget.CompoundButton;
 import android.widget.RadioButton;
 import android.widget.RelativeLayout;
 
-import com.android.settings.R;
-
 import androidx.preference.Preference;
 import androidx.preference.PreferenceViewHolder;
 
+import com.android.settings.R;
+
 public class ApnPreference extends Preference implements
         CompoundButton.OnCheckedChangeListener, OnClickListener {
     final static String TAG = "ApnPreference";