gh-126112: Fix test_os.TimerfdTests: use 10 ms resolution

Use 10 ms for CLOCK_RES instead of 100 ms to tolerate slow buildbots.

Author: vstinner

Lib/test/test_os.py

@@ -4291,13 +4291,8 @@ def test_eventfd_select(self):
 @unittest.skipIf(sys.platform == "android", "gh-124873: Test is flaky on Android")
 @support.requires_linux_version(2, 6, 30)
 class TimerfdTests(unittest.TestCase):
-    # 1 ms accuracy is reliably achievable on every platform except Android
-    # emulators, where we allow 10 ms (gh-108277).
-    if sys.platform == "android" and platform.android_ver().is_emulator:
-        CLOCK_RES_PLACES = 2
-    else:
-        CLOCK_RES_PLACES = 3
-
+    # gh-126112: Use 10 ms to tolerate slow buildbots
+    CLOCK_RES_PLACES = 2  # 10 ms
     CLOCK_RES = 10 ** -CLOCK_RES_PLACES
     CLOCK_RES_NS = 10 ** (9 - CLOCK_RES_PLACES)