onclite: Kill BT A2DP offload

* sdm632/msm89xx doesn't support bt a2dp offload.
  So Drop it.

This commit includes:

Revert "onclite: Disable A2DP offload in developer options by default"

This reverts commit 6a7fb7ac.

Revert "onclite: BluetoothAudio HAL: flip to be enabled by default"

This reverts commit 0f7bb134.

Revert "onclite: A2DP offload: swap audio XML files"

This reverts commit de431649.

Revert "onclite: Enable BT A2DP offload"

This reverts commit db524341.

Revert "onclite: Support A2DP offload for Bluetooth Audio HAL V2"

This reverts commit 59b8e902.

Change-Id: I7e86b810b14023f8428927147cce77493863d7a0
Signed-off-by: Dhina17 <dhinalogu@gmail.com>