async: removed svn $Id$

modules/async/async_mod.c

@@ -1,6 +1,4 @@
 /**
- * $Id$
- *
  * Copyright (C) 2011 Daniel-Constantin Mierla (asipto.com)
  *
  * This file is part of Kamailio, a free SIP server.

modules/async/async_sleep.c

@@ -1,6 +1,4 @@
 /**
- * $Id$
- *
  * Copyright (C) 2011 Daniel-Constantin Mierla (asipto.com)
  *
  * This file is part of Kamailio, a free SIP server.

modules/async/async_sleep.h

@@ -1,6 +1,4 @@
 /**
- * $Id$
- *
  * Copyright (C) 2011 Daniel-Constantin Mierla (asipto.com)
  *
  * This file is part of Kamailio, a free SIP server.