Revert "eventpoll: Fix semi-unbounded recursion"

This reverts commit f2e467a4.

It caused a regression in the LTP test epoll_ctl04 and can be reapplied
later once the fix is determined. Reported upstream in [1].

Bug: 435559836
Link: https://lore.kernel.org/all/aIvusYlauznxttGc@google.com/

 [1]
Change-Id: I0f33c9132d565c0cf99d5910d439130593176344
Signed-off-by: Carlos Llamas <cmllamas@google.com>