protocols: remove IPPROTO_DIVERT

lib/libc/net/protocols

@@ -156,4 +156,3 @@ bit-emu	147	BIT-EMU		# Bit-stream Emulation (RFC9801)
 pfsync	240	PFSYNC		# PF Synchronization [non IANA]
 #	253-254			# Use for experimentation and testing (RFC3692)
 #	255			# Reserved
-divert	258	DIVERT		# Divert pseudo-protocol [non IANA]

sys/netinet/in.h

@@ -248,15 +248,12 @@ __END_DECLS
 #define	IPPROTO_RESERVED_253	253		/* Reserved */
 #define	IPPROTO_RESERVED_254	254		/* Reserved */
 /* 255: Reserved */
-/* BSD Private, local use, namespace incursion, no longer used */
-#define	IPPROTO_OLD_DIVERT	254		/* OLD divert pseudo-proto */
 #define	IPPROTO_MAX		256
 
 /* last return value of *_input(), meaning "all job for this pkt is done".  */
 #define	IPPROTO_DONE		257
 
 /* Only used internally, so can be outside the range of valid IP protocols. */
-#define	IPPROTO_DIVERT		258		/* divert pseudo-protocol */
 #define	IPPROTO_SEND		259		/* SeND pseudo-protocol */
 
 /*