Revert "ASoC: jack: Use power efficient workqueue"

This reverts commit d74a1d50d6efeb2cd1c4e45c8a70bc9102593940.
Revert "ASoC: pcm: Use the power efficient workqueue for delayed powerdown"

This reverts commit 4fe6fbf9aa2fe162ad97e8ac758b699bf79e9c37.
Revert "block: queue work on power efficient wq"

This reverts commit a9cb0204e45206d684bc4503b5060fddb55d5a31.
Revert "PHYLIB: queue work on system_power_efficient_wq"

This reverts commit aae002089dcb639535c635fab7be6a14f7fd533b.
Revert "workqueue: Add system wide power_efficient workqueues"

This reverts commit f2ef75d76444b7982839c3afdfac2a36af80a331.
Revert "workqueues: Introduce new flag WQ_POWER_EFFICIENT for power oriented workqueues"

This reverts commit 1059d3e39fb656be50b18e9663a3cc55ab5180d0.