remove atomicity.h from public headers

atomicity.h

@@ -1,38 +0,0 @@
-/*
-    Copyright (C) 2004 Jack O'Quin
-    
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program 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 for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-*/
-
-#ifndef __jack_atomicity_h__
-#define __jack_atomicity_h__
-
-/*
- * Interface with various machine-dependent headers derived from the
- * gcc/libstdc++.v3 sources.  We try to modify the GCC sources as
- * little as possible.  The following include is resolved using the
- * config/configure.hosts mechanism.  It will use an OS-dependent
- * version if available, otherwise the one for this CPU.  Some of
- * these files might not work with older GCC compilers.
- */
-#include <sysdeps/atomicity.h>
-
-/* These functions are defined for each platform.  The C++ library
- * function names start with "__" to avoid namespace pollution. */
-#define exchange_and_add __exchange_and_add
-#define atomic_add __atomic_add
-
-#endif /* __jack_atomicity_h__ */