Added UM.DISALLOW_OEM_UNLOCK, Removed Global.OEM_UNLOCK_DISALLOWED.

Currently we used global setting to restrict user from enabling oem
unlock. As global settings can be chagned using adb, using user
restrictions instead.

Bug: 29893399
Change-Id: Ic83112a4838b8279bf50408a29ae205e0b8639ee
diff --git a/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java b/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
index 950c7d3..28e9a45 100644
--- a/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
+++ b/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
@@ -2330,14 +2330,7 @@
                 }
 
                 if (currentVersion == 127) {
-                    // Version 127: Disable OEM unlock setting by default on some devices.
-                    final SettingsState globalSettings = getGlobalSettingsLocked();
-                    String defaultOemUnlockDisabled = (getContext().getResources()
-                            .getBoolean(R.bool.def_oem_unlock_disallow) ? "1" : "0");
-                    globalSettings.insertSettingLocked(
-                            Settings.Global.OEM_UNLOCK_DISALLOWED,
-                            defaultOemUnlockDisabled,
-                            SettingsState.SYSTEM_PACKAGE_NAME);
+                    // version 127 is no longer used.
                     currentVersion = 128;
                 }