Revert "prebuilt: apns-conf-cdma.xml: Fix Sprint APNs and clean up APNs for test SIM cards"

This reverts commit 5b279c77ba62d3a896c143238fd031c2b4655699.
prebuilt: apns-conf-cdma.xml: Fix Sprint APNs and clean up APNs for test SIM cards

- Add back and fix Sprint APN for 1x/HRPD. Corrects MMS settings and gives a
suitable APN for DcTracker to use for HRPD/EvDo.
- Remove All test SIM APNs. Since no one is running around with a test SIM and
its useless to have a bunch of APNs sharing the same MCC MNC pair.

Change-Id: I1ccbed9b3cdd456e97d205d70bf283785122de8c
Merge branch 'cm-10.2' of github.com:Team-Hydra/android_vendor_cm into cm-10.2