Leave unmetered Wi-Fi network policies intact.

They are now removed when the WifiConfiguration is deleted.

Bug: 6344821, 6369307
Change-Id: Id411fa06cec10435501ef03c56d0bcb96ed229db

src/com/android/settings/net/DataUsageMeteredSettings.java

@@ -16,6 +16,7 @@
 
 package com.android.settings.net;
 
+import static android.net.wifi.WifiInfo.removeDoubleQuotes;
 import static com.android.settings.DataUsageSummary.hasReadyMobileRadio;
 import static com.android.settings.DataUsageSummary.hasWifiRadio;
 
@@ -120,14 +121,4 @@ public class DataUsageMeteredSettings extends SettingsPreferenceFragment {
             mPolicyEditor.setPolicyMetered(mTemplate, isChecked());
         }
     }
-
-
-    private static String removeDoubleQuotes(String string) {
-        final int length = string.length();
-        if ((length > 1) && (string.charAt(0) == '"') && (string.charAt(length - 1) == '"')) {
-            return string.substring(1, length - 1);
-        }
-        return string;
-    }
-
 }

src/com/android/settings/net/NetworkPolicyEditor.java

@@ -214,13 +214,6 @@ public class NetworkPolicyEditor {
         } else {
             if (policy == null) {
                 // ignore when policy doesn't exist
-            } else if (policy.template.getMatchRule() == MATCH_WIFI
-                    && policy.warningBytes == WARNING_DISABLED
-                    && policy.limitBytes == LIMIT_DISABLED) {
-                // when WIFI goes unmetered, and no other warning/limit for
-                // policy, clean it up.
-                mPolicies.remove(policy);
-                modified = true;
             } else if (policy.metered) {
                 policy.metered = false;
                 policy.inferred = false;