Revert "libstagefright: Add pause support for hardware omx component"

This reverts commit 8332d0ffac5e216f2ebb6ceb7f132c505a8ab2ee.
Revert "audio: fix for deadlock issue during LPA playback"

This reverts commit 12aee4e83faf4c18f6d63917b08fe131b566582d.
Revert "libstagefright: optimize thumbnail generation path"

This reverts commit aa057c3c9c9680cd566fa524558c7b06dcf091e6.