First step towards cleaning up Global settings.

Remove all @Deprecated @hide settings, and clean up any stragglers.

Bug: 7232125
Change-Id: Ibf67093c728d4a28565129b923edb1701d3b2789
diff --git a/services/java/com/android/server/ConnectivityService.java b/services/java/com/android/server/ConnectivityService.java
index ceb17c7..891cac7 100644
--- a/services/java/com/android/server/ConnectivityService.java
+++ b/services/java/com/android/server/ConnectivityService.java
@@ -1509,8 +1509,8 @@
         //       which is where we store the value and maybe make this
         //       asynchronous.
         enforceAccessPermission();
-        boolean retVal = Settings.Secure.getInt(mContext.getContentResolver(),
-                Settings.Secure.MOBILE_DATA, 1) == 1;
+        boolean retVal = Settings.Global.getInt(mContext.getContentResolver(),
+                Settings.Global.MOBILE_DATA, 1) == 1;
         if (VDBG) log("getMobileDataEnabled returning " + retVal);
         return retVal;
     }