Fix 7.9 build

wallento · wallento · commit e97321349550 · 2016-03-19T14:26:57.000+01:00
The demangle include breaks the build, but it is not needed.
diff --git a/gdb/or1k-tdep.c b/gdb/or1k-tdep.c
@@ -87,7 +87,6 @@
    been removed.                                                             */
 /*---------------------------------------------------------------------------*/
 
-#include "demangle.h"
 #include "defs.h"
 #include <string.h>
 #include "frame.h"
