Revert "Phone: Add headset notification when wired headset plugin"

* This is useless and was -2ed on cm-11.0

This reverts commit e76b54788170b1f04d8d91a0d1f81b4faf2de1f6.

Change-Id: I603b4044473f8b20c4ff661194608ec973c2a276
Proper supplementary service notification handling (3/5)

Pass parsed call properties around instead bleeding the implementation
detail 'Supplementary service notification' into all layers.

Change-Id: Ib7c3a494024013c261b1d708c47d0e80ae5876dd
Merge "Proper supplementary service notification handling (3/5)" into cm-12.0