Remove left over keycodes.h

For some reason we still track this file in git even though we don't use
it any more.

Signed-off-by: Ran Benita <ran234@gmail.com>

src/xkbcomp/keycodes.h

@@ -1,45 +0,0 @@
-/************************************************************
- * Copyright (c) 1994 by Silicon Graphics Computer Systems, Inc.
- *
- * Permission to use, copy, modify, and distribute this
- * software and its documentation for any purpose and without
- * fee is hereby granted, provided that the above copyright
- * notice appear in all copies and that both that copyright
- * notice and this permission notice appear in supporting
- * documentation, and that the name of Silicon Graphics not be
- * used in advertising or publicity pertaining to distribution
- * of the software without specific prior written permission.
- * Silicon Graphics makes no representation about the suitability
- * of this software for any purpose. It is provided "as is"
- * without any express or implied warranty.
- *
- * SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
- * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
- * GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
- * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION  WITH
- * THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- ********************************************************/
-
-#ifndef KEYCODES_H
-#define KEYCODES_H 1
-
-#include "xkbcomp-priv.h"
-
-#define KeyNameToLong(n) (              \
-        (((unsigned long) n[0]) << 24) |     \
-        (((unsigned long) n[1]) << 16) |     \
-        (((unsigned long) n[2]) << 8) |     \
-        (((unsigned long) n[3]) << 0))
-
-extern const
-char *
-longText(unsigned long val);
-
-extern void
-LongToKeyName(unsigned long val, char *name_rtrn);
-
-#endif /* KEYCODES_H */