daemon: Remove GUESTFSD_EXT_CMD.

GUESTFSD_EXT_CMD was used by OpenSUSE to track which external commands
are run by the daemon and package those commands into the appliance.

It is no longer used by recent SUSE builds, so remove it.

Thanks: Pino Toscano, Olaf Hering.

daemon/cpio.c

@@ -33,8 +33,6 @@
 #include "actions.h"
 #include "optgroups.h"
 
-GUESTFSD_EXT_CMD(str_cpio, cpio);
-
 /* Has one FileOut parameter. */
 /* Takes optional arguments, consult optargs_bitmask. */
 int
@@ -82,7 +80,7 @@ do_cpio_out (const char *dir, const char *format)
 
   if (asprintf_nowarn (&cmd, "cd %Q && find -print0 | %s -0 -o -H %s --quiet",
                        buf,
-                       str_cpio,
+                       "cpio",
                        format) == -1) {
     reply_with_perror ("asprintf");
     return -1;