Revert "Fix audio capture for sample rates over 8khz"

This reverts commit ad69150bb66e14c085e3191cf60e8b57fc9727ad.
This is not needed anymore after kernel commit 0ffbdc998c4652398a3c07f36f79cb25a0ea9126
'msm-pcm-q6: Add support for flexible recording period size'

Change-Id: I6c8a5c6e67193ace2e322dc745f8a3d48cd9a227