Revert "regulator: core: Use the power efficient workqueue for delayed powerdown"

This reverts commit c41301509a606da18cc2848c292ad8e660c72346.
Revert "ASoC: jack: Use power efficient workqueue"

This reverts commit c9c133cbb5e48ee38b0467d3de452114c1928fb9.
Revert "ASoC: pcm: Use the power efficient workqueue for delayed powerdown"

This reverts commit 09fc1ae4a98b9ac491a1982771da59f41169d5ad.