Amit Kapila 1607cd0b6c Remove unused wait events.
Commit 464824323e introduced the wait events which were neither used by
that commit nor by follow-up commits for that work.

Author: Masahiro Ikeda
Backpatch-through: 14, where it was introduced
Discussion: https://postgr.es/m/ff077840-3ab2-04dd-bbe4-4f5dfd2ad481@oss.nttdata.com
2021-10-21 08:01:25 +05:30
..
2021-10-21 08:01:25 +05:30