Remove the redundant parameters from createTrack_l()

AudioRecord::openRecord_l() code was refactored earlier to
remove the redundant parameters:
    > Change-Id: I124dce344b1d11c2dd66ca5e2c9aec0c52c230e2

This changelist refactors AudioTrack similarly.

Change-Id: Iefd2bd662870ea81d04eff7b7c26f9c8b0dadd26
2 files changed