cc: Remove unused scheduler setting.

cc/scheduler/scheduler_settings.cc

Index: cc/scheduler/scheduler_settings.cc
diff --git a/cc/scheduler/scheduler_settings.cc b/cc/scheduler/scheduler_settings.cc
index 0a95df8548ad8ff136616144e15b8f50d987e3c6..07386d0b80a04acecb52bc8ee7781e253be560bc 100644
--- a/cc/scheduler/scheduler_settings.cc
+++ b/cc/scheduler/scheduler_settings.cc
@@ -31,8 +31,6 @@ SchedulerSettings::AsValue() const {
                     using_synchronous_renderer_compositor);
   state->SetInteger("background_frame_interval",
                     background_frame_interval.InMicroseconds());
-  state->SetBoolean("abort_commit_before_compositor_frame_sink_creation",
-                    abort_commit_before_compositor_frame_sink_creation);
   state->SetBoolean("enable_latency_recovery", enable_latency_recovery);
   return std::move(state);
 }