Revert "net/ifconfig net/iproute2: support lookup ifconfig/ip dynamically"

This reverts commit f583030e3c.

The previous commit did not account for the case of not having iproute2
installed.

Reported-by: Duncan <1i5t5.duncan@cox.net>
X-Gentoo-Bug: 397875
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=397875

net/ifconfig.sh.Linux.in

@@ -1,18 +1,9 @@
 # Copyright (c) 2007-2008 Roy Marples <roy@marples.name>
 # Released under the 2-clause BSD license.
 
-_ifconfig()
-{
-	if [ -x /bin/ifconfig ]; then
-		echo /bin/ifconfig
-	else
-		which ifconfig 2>/dev/null
-	fi
-}
-
 ifconfig_depend()
 {
-	program $(_ifconfig)
+	program /sbin/ifconfig
 	provide interface
 }
 

net/iproute2.sh

@@ -6,7 +6,7 @@ _ip()
 	if [ -x /bin/ip ]; then
 		echo /bin/ip
 	else
-		which ip 2>/dev/null
+		echo /sbin/ip
 	fi
 }