Don't echo a comment during make depend.

sys/conf/kern.post.mk

@@ -88,14 +88,13 @@ kernel-depend:
 	if [ -f .depend ]; then mv .depend .olddep; fi
 	${MAKE} _kernel-depend
 
+# The argument list can be very long, use make -V and xargs to
+# pass it to mkdep.
 _kernel-depend: assym.s vnode_if.h ${BEFORE_DEPEND} \
 	    ${CFILES} ${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
 	    ${SYSTEM_SFILES} ${MFILES:T:S/.m$/.h/}
 	if [ -f .olddep ]; then mv .olddep .depend; fi
 	rm -f .newdep
-	#
-	# The argument list can be very long, use make -V and xargs to
-	# pass it to mkdep.
 	${MAKE} -V CFILES -V SYSTEM_CFILES -V GEN_CFILES | xargs \
 	    env MKDEP_CPP="${CC} -E" CC="${CC}" mkdep -a -f .newdep ${CFLAGS}
 	${MAKE} -V SFILES -V SYSTEM_SFILES | xargs \