snmpd(8): don't link to libkvm

[Martijn van Duren]

This one got overlooked when all the metrics moved to snmpd_metrics.

OK?

martijn@

Index: Makefile
===================================================================
RCS file: /cvs/src/usr.sbin/snmpd/Makefile,v
retrieving revision 1.21
diff -u -p -r1.21 Makefile
--- Makefile    6 Oct 2022 14:41:08 -0000       1.21
+++ Makefile    14 Oct 2022 15:28:48 -0000
@@ -8,7 +8,7 @@ SRCS=           parse.y log.c snmpe.c application
                    mps.c trap.c mib.c smi.c snmpd.c \
                    proc.c usm.c traphandler.c util.c
 
-LDADD=         -levent -lutil -lkvm -lcrypto
+LDADD=         -levent -lutil -lcrypto
 DPADD=         ${LIBEVENT} ${LIBUTIL}
 CFLAGS+=       -Wall -I${.CURDIR}
 CFLAGS+=       -Wstrict-prototypes -Wmissing-prototypes