Moved data settings to phone

Since there are multiple DcTrackers, but we only have
one set of data settings. So we need to move them from
DcTracker to Phone.

Test: Telephony sanity tests + unit tests
Bug: 73659459
Change-Id: If11a6eff057a18b4aa97addbb348537bd3194e1a

src/com/android/settings/RadioInfo.java

@@ -1194,12 +1194,10 @@ public class RadioInfo extends Activity {
             int state = mTelephonyManager.getDataState();
             switch (state) {
                 case TelephonyManager.DATA_CONNECTED:
-                    //FIXME: Replace with a TelephonyManager call
-                    phone.setUserDataEnabled(false);
+                    mTelephonyManager.setDataEnabled(false);
                     break;
                 case TelephonyManager.DATA_DISCONNECTED:
-                    //FIXME: Replace with a TelephonyManager call
-                    phone.setUserDataEnabled(true);
+                    mTelephonyManager.setDataEnabled(true);
                     break;
                 default:
                     // do nothing