Revert "sound control 3.x: Initial GPL release for WCD9310 Audio Codec"

This reverts commit 20bcd149b27e108040bb58948abae1d047a2c13c.
Revert "sound/soc/codecs/wcd9310.c: expose additional controls"

This reverts commit 2dab47ed14715fc795dcdef03ff38452799eb489.
Revert "Sound Control: Added headphone poweramp controls"

This reverts commit 22bd0cdb7c95c9888ed15e2c734be9df661b4cb5.
Revert "added kernel level Sound Control GPL interface (thanks to @faux123)"

This reverts commit c38511717be0676e6481f5e4a66133f23bf95c4e.