Fix ImsManager callback called once registered

Register the callbacks to the callback list directly, and remove the
localCallback list. Now the MmTelFeature doesn't maintain one connection
for each process anymore.

Change-Id: I04f363383963e4470ea2195e4b938a7056138d36
Test: Unit
Bug: 112677827
1 file changed
tree: 1744c206e7c8e6ea420bc1b911f8549b03f36725
  1. src/
  2. tests/
  3. Android.bp
  4. CleanSpec.mk
  5. OWNERS
  6. README.txt