SF: Delete SchedulerUtils.{h,cpp}

Remove dead code, inline trivial helpers, and replace the tracing
helpers with ftl::Concat.

Make the TimerDispatch trace slightly less cryptic.

Bug: 185535769
Test: TimerDispatch traces
Change-Id: I9b36d8344f4bc926fc9960ab6ac605eac95f3dac
diff --git a/services/surfaceflinger/Scheduler/VSyncPredictor.h b/services/surfaceflinger/Scheduler/VSyncPredictor.h
index 40e6944..cfaf7d6 100644
--- a/services/surfaceflinger/Scheduler/VSyncPredictor.h
+++ b/services/surfaceflinger/Scheduler/VSyncPredictor.h
@@ -16,11 +16,12 @@
 
 #pragma once
 
-#include <android-base/thread_annotations.h>
 #include <mutex>
 #include <unordered_map>
 #include <vector>
-#include "SchedulerUtils.h"
+
+#include <android-base/thread_annotations.h>
+
 #include "VSyncTracker.h"
 
 namespace android::scheduler {