status exit codes: Remove a no more used enum value

The old enum value was S_ERR_ND_NO_PRINTER.
This is a follow-up to 25687e1
"Print packets for unsupported link-layer protocols in hexadecimal/ASCII".

[skip ci]

Author: fxlb

status-exit-codes.h

@@ -22,7 +22,6 @@
 typedef enum {
 	S_SUCCESS           = 0, /* not a libnetdissect status */
 	S_ERR_HOST_PROGRAM  = 1, /* not a libnetdissect status */
-	S_ERR_ND_NO_PRINTER = 11,
 	S_ERR_ND_MEM_ALLOC  = 12,
 	S_ERR_ND_OPEN_FILE  = 13,
 	S_ERR_ND_WRITE_FILE = 14,