Revert "Fix the crash when editing or deleting APN."

This reverts commit db9a9bb0b0.

Reason for revert: As per discussion in b/72484718, we are going to
block Access Point Name entry point in Network&Settings, so we no longer
need the change in ApnSettings fragment itself.
Bug: 72484718

Change-Id: Ia84f129b86fe72b3b2dc9699d5893ced7c65e1c3

src/com/android/settings/ApnPreference.java

@@ -16,7 +16,6 @@
 
 package com.android.settings;
 
-import static android.provider.Telephony.Carriers.CONTENT_URI;
 import static android.provider.Telephony.Carriers.FILTERED_URI;
 
 import android.content.ContentUris;
@@ -37,7 +36,6 @@ import android.widget.RelativeLayout;
 public class ApnPreference extends Preference implements
         CompoundButton.OnCheckedChangeListener, OnClickListener {
     final static String TAG = "ApnPreference";
-    private boolean mDpcEnforced = false;
 
     private int mSubId = SubscriptionManager.INVALID_SUBSCRIPTION_ID;
 
@@ -121,8 +119,7 @@ public class ApnPreference extends Preference implements
             Context context = getContext();
             if (context != null) {
                 int pos = Integer.parseInt(getKey());
-                Uri url = ContentUris.withAppendedId(
-                        mDpcEnforced ? FILTERED_URI : CONTENT_URI, pos);
+                Uri url = ContentUris.withAppendedId(FILTERED_URI, pos);
                 Intent editIntent = new Intent(Intent.ACTION_EDIT, url);
                 editIntent.putExtra(ApnSettings.SUB_ID, mSubId);
                 context.startActivity(editIntent);
@@ -141,8 +138,4 @@ public class ApnPreference extends Preference implements
     public void setSubId(int subId) {
         mSubId = subId;
     }
-
-    public void setDpcEnforced(boolean enforced) {
-        mDpcEnforced = enforced;
-    }
 }