[3.13] gh-124873: Skip timerfd tests on Android (GH-127279) (#127290)

gh-124873: Skip timerfd tests on Android (GH-127279)

* Revert "[3.13] gh-124873: Tolerate 100 ms in TimerfdTests on Android (GH-127101) (GH-127105)"

This reverts commit c09366b1fed2289530581505834b2b262120a7c7.

* Skip timerfd tests on Android.

(cherry picked from commit 4ca2c82862e3810a7d68799df2bb5198a9afb219)

Co-authored-by: Malcolm Smith <smith@chaquo.com>
Co-authored-by: Victor Stinner <vstinner@python.org>