Revert "workqueue: Rename "delayed" (delayed by active management) to "inactive""

This reverts commit 77d9a64c which is
commit f97a4a1a upstream.

It breaks the Android kernel abi, so revert it.  If it needs to come
back later, it can do so in an abi-safe way.

Bug: 161946584
Change-Id: Ia1a60890202c1cddb635ecbd392e1a0726463a3c
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>