Revert "post_proc: fix crash in offload effect bundle during stop output"

* This actually got removed here: https://github.com/CyanogenMod/android_hardware_qcom_audio/commit/235d9108b38bc06c59e7e7953df8667b95efcd05#diff-bf4bafebbb17ddfc199fa3b8fdc5ac01L308

This reverts commit d3a59a04.

Change-Id: I0f0f10365b19e2816981a0fa443d2e9471ff6f02