--- a/src/hotspot/share/trace/traceBackend.hpp	Tue May 15 11:28:29 2018 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,63 +0,0 @@
-/*
- * Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
-#ifndef SHARE_VM_TRACE_TRACEBACKEND_HPP
-#define SHARE_VM_TRACE_TRACEBACKEND_HPP
-
-#include "utilities/macros.hpp"
-#if INCLUDE_TRACE
-#include "runtime/globals.hpp"
-#include "runtime/os.hpp"
-#include "trace/traceTime.hpp"
-#include "tracefiles/traceEventIds.hpp"
-
-class TraceBackend {
-public:
-  static bool enabled(void) {
-    return EnableTracing;
-  }
-
-  static bool is_event_enabled(TraceEventId id) {
-    return enabled();
-  }
-
-  static TracingTime time() {
-    return os::elapsed_counter();
-  }
-
-  static void on_unloading_classes(void) {
-  }
-
-};
-
-class TraceThreadData {
-public:
-    TraceThreadData() {}
-};
-
-typedef TraceBackend Tracing;
-
-#else // !INCLUDE_TRACE
-#include "trace/noTraceBackend.hpp"
-#endif // INCLUDE_TRACE
-#endif // SHARE_VM_TRACE_TRACEBACKEND_HPP