Remove the threadframe stuff which went unused.

sugar/Makefile.am

@@ -7,5 +7,4 @@ sugar_PYTHON =				\
 	env.py				\
 	logger.py			\
 	profile.py			\
-	TracebackUtils.py		\
 	util.py

sugar/TracebackUtils.py

@@ -1,54 +0,0 @@
-# Copyright (C) 2006, Red Hat, Inc.
-#
-# 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 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.
-
-import sys
-import traceback
-import os
-import signal
-
-haveThreadframe = True
-try:
-    import threadframe
-except ImportError:
-    haveThreadframe = False
-
-class TracebackHelper(object):
-    def __init__(self):
-        fname = "%s-%d" % (os.path.basename(sys.argv[0]), os.getpid())
-        self._fpath = os.path.join("/tmp", fname)
-        print "Tracebacks will be written to %s on SIGUSR1" % self._fpath
-        signal.signal(signal.SIGUSR1, self._handler)
-
-    def __del__(self):
-        try:
-            os.remove(self._fpath)
-        except OSError:
-            pass
-
-    def _handler(self, signum, pframe):
-        f = open(self._fpath, "a")
-        if not haveThreadframe:
-            f.write("Threadframe not installed.  No traceback available.\n")
-        else:
-            frames = threadframe.dict()
-            for thread_id, frame in frames.iteritems():
-                f.write(('-' * 79) + '\n')
-                f.write('[Thread %s] %d' % (thread_id, sys.getrefcount(frame)) + '\n')
-                traceback.print_stack(frame, limit=None, file=f)
-                f.write("\n")
-        f.write('\n')
-        f.close()