Revert "libstagefright: Keep LOOPING/AUTO_LOOPING flag during teardown"

This reverts commit 9a59488dae2c70ab0c55cda7721824ca1a71340d.

Change-Id: I9af6fe9f2086cfe17f55b214d5093d7acece791c
Merge pull request #35 from CyanogenMod/cm-11.0

Revert "libstagefright: Keep LOOPING/AUTO_LOOPING flag during teardown"