Remove unused VLC_EEXIT* error codes

include/vlc_common.h

@@ -406,8 +406,6 @@ struct vlc_list_t
 
 #define VLC_ENOITEM        -40                           /**< Item not found */
 
-#define VLC_EEXIT         -255                             /* Program exited */
-#define VLC_EEXITSUCCESS  -999                /* Program exited successfully */
 #define VLC_EGENERIC      -666                              /* Generic error */
 
 /*****************************************************************************

src/misc/error.c

@@ -59,8 +59,6 @@ char const * vlc_error ( int i_err )
         case VLC_EBADVAR:
             return "bad variable value";
 
-        case VLC_EEXIT:
-            return "program exited";
         case VLC_EGENERIC:
             return "generic error";
         default: