vendor: cleanup apn inheritance

- any older device still using cmda.mk will just be passed up to gsm.mk
- apns-conf-cdma.xml is now a symlink to apns-conf.xml
  - everything from apns-conf-cdma.xml is in apns-conf.xml anyway

Change-Id: I2cd54df6f5304f6bc5d37e7aeba917fb7067ceb3
3 files changed
tree: 1f633cd88d473e549a50fe7c99fe841283589be1
  1. config/
  2. overlay/
  3. prebuilt/
  4. sepolicy/
  5. utils/
  6. Android.mk