Revert "add the appropriate network scripts to the boot runlevel"

This reverts commit add965706a.
This commit was broken so I need to revert it.

runlevels/Makefile

@@ -1,5 +1,5 @@
-BOOT=		bootmisc fsck hostname localmount \
-		root swap swapfiles sysctl urandom ${BOOT-${OS}}
+BOOT=		bootmisc fsck hostname localmount network \
+		root staticroute swap swapfiles sysctl urandom ${BOOT-${OS}}
 DEFAULT=	local netmount
 SHUTDOWN=	savecache ${SHUTDOWN-${OS}}
 SYSINIT=	${SYSINIT-${OS}}
@@ -37,14 +37,6 @@ BOOT-NetBSD=	hostid newsyslog savecore syslogd
 # NetBSD specific stuff
 BOOT-NetBSD+=	devdb swap-blk ttys wscons
 
-ifeq (${MKOLDNET},yes)
-boot-FreeBSD += net.lo0
-boot-Linux += net.lo
-boot-NetBSD += net.lo0
-else
-boot += network staticroute
-endif
-
 all:
 
 install: