Remove PerfTimer.

It uses the no longer available sun.misc.Perf API.

core/src/main/java/com/threerings/media/FrameManager.java

@@ -791,7 +791,6 @@ public abstract class FrameManager
 
     /** The name of the high-performance timer class we attempt to load. */
     protected static final String[] PERF_TIMERS = {
-        "com.threerings.media.timer.PerfTimer",
         "com.threerings.media.timer.NanoTimer",
     };
 }

core/src/main/java/com/threerings/media/timer/PerfTimer.java

@@ -1,47 +0,0 @@
-//
-// Nenya library - tools for developing networked games
-// Copyright (C) 2002-2012 Three Rings Design, Inc., All Rights Reserved
-// https://github.com/threerings/nenya
-//
-// This library is free software; you can redistribute it and/or modify it
-// under the terms of the GNU Lesser General Public License as published
-// by the Free Software Foundation; either version 2.1 of the License, or
-// (at your option) any later version.
-//
-// This library 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
-// Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public
-// License along with this library; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
-package com.threerings.media.timer;
-
-import sun.misc.Perf;
-
-/**
- * A timer that uses the performance clock exposed by Sun in JDK 1.4.2.
- * @deprecated Use {@link NanoTimer} instead.
- */
-@Deprecated
-// warning: sun.misc.Perf is Sun proprietary API and may be removed in a future release
-@SuppressWarnings("all")
-public class PerfTimer extends CalibratingTimer
-{
-    public PerfTimer ()
-    {
-        _timer = Perf.getPerf();
-        init(_timer.highResFrequency() / 1000, _timer.highResFrequency() / 1000000);
-    }
-
-    @Override
-    public long current ()
-    {
-        return _timer.highResCounter();
-    }
-
-    /** A performance timer object. */
-    protected Perf _timer;
-}