Backed out changeset 59e2f15b38f5 (bug 1504139) for talos chrome failures on a CLOSED TREE

testing/talos/talos/test.py

@@ -1037,6 +1037,3 @@ class about_preferences_basic(PageloaderTest):
     unit = 'ms'
     lower_is_better = True
     fnbpaint = True
-    """ASAP mode"""
-    preferences = {'layout.frame_rate': 0,
-                   'docshell.event_starvation_delay_hint': 1}