Revert "libmedia: Add ICS constructor for getOutput"

This reverts commit 469fa10160b4577d70972314d117060f9845421d.
AudioTrack: Do not inline getSessionId either

Should help for other nvomx versions that requires it.

Change-Id: Ie8e3b9449ebf0915ae3432ab2f12794bb8ef39c9
AudioTrack: backport getSessionId
OMX hack for Tegra2 devices