Revert "telephony: set additional audioparameters for incall audio (1/2)"

Part 2/2 was never merged and is not needed.

This reverts commit 129d5a726b9c81190450f6b242e53f794c2711db.

Change-Id: If0417a66c3a5a78e4f7b4ba6d1d543f56648e442

Conflicts:
	core/res/res/values/symbols.xml