This removes a "fix" originally done for Solaris that is no longer needed

since we fixed our stdbool.h header file to work when compiling C++

programs:

14612 - patch for xmp.h for Solaris (don't include stdbool.h)

https://bugs.freedesktop.org/show_bug.cgi?id=14612

XXX file upstream bug

--- exempi-2.2.2/exempi/xmp.h 2014-08-31 15:03:10.000000000 -0700

+++ exempi-2.2.2.new/exempi/xmp.h 2015-07-08 11:17:12.175501827 -0700

@@ -40,10 +40,7 @@

#define __EXEMPI_XMP_H_

#include <stdlib.h>

-/* stdbool choke on Sun (bug #14612) */

-#if !defined(__sun)

#include <stdbool.h>

-#endif

#include <stdint.h>

#include <time.h>