Remove unused trace sampling states

sky/engine/platform/testing/RunAllTests.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 36 matching lines @@
 int main(int argc, char** argv)
 {
     WTF::setRandomSource(AlwaysZeroNumberSource);
     WTF::initialize();
     WTF::initializeMainThread();
 
     blink::TestingPlatformSupport::Config platformConfig;
     blink::TestingPlatformSupport platform(platformConfig);
 
     blink::Partitions::init();
-    blink::EventTracer::initialize();
     int result = base::RunUnitTestsUsingBaseTestSuite(argc, argv);
     blink::Partitions::shutdown();
     return result;
 }