Remove the Econet code. It was part of acorn26, which was removed a

month ago.

doc/TODO.smpnet

@@ -1,4 +1,4 @@
-$NetBSD: TODO.smpnet,v 1.18 2017/12/05 03:23:29 ozaki-r Exp $
+$NetBSD: TODO.smpnet,v 1.19 2018/02/27 14:28:01 maxv Exp $
 
 MP-safe components
 ==================
@@ -40,7 +40,6 @@ Non MP-safe components and kernel options
    - ARCNET (if_arcsubr.c)
    - ATM (if_atmsubr.c)
    - BRIDGE_IPF
-   - if_ecosubr.c
    - FDDI (if_fddisubr.c)
    - HIPPI (if_hippisubr.c)
    - IEEE 1394 (if_ieee1394subr.c)

sys/conf/files

@@ -1,4 +1,4 @@
-#	$NetBSD: files,v 1.1195 2018/02/22 07:30:43 mrg Exp $
+#	$NetBSD: files,v 1.1196 2018/02/27 14:28:01 maxv Exp $
 #	@(#)files.newconf	7.5 (Berkeley) 5/10/93
 
 version 	20171118
@@ -418,11 +418,10 @@ include "dev/splash/files.splash"
 include "dev/videomode/files.videomode"
 
 # net device attributes - we have generic code for arc(net), ether(net),
-# fddi, token ring, atm and eco(net).
+# fddi, token ring, and atm.
 #
 define	arcnet
 define	atm
-define	eco
 define	ether
 define	fddi
 define	hippi

sys/dev/DEVNAMES

@@ -1,4 +1,4 @@
-#	$NetBSD: DEVNAMES,v 1.301 2018/02/26 23:09:32 sevan Exp $
+#	$NetBSD: DEVNAMES,v 1.302 2018/02/27 14:28:01 maxv Exp $
 #
 # This file contains all used device names and defined attributes in
 # alphabetical order. New devices added to the system somewhere should first
@@ -382,7 +382,6 @@ ec			MI
 ec			sun2
 eca			acorn26
 eccmemctl		sparc
-eco			MI		Attribute
 ed			MI (MCA)
 ed			amiga
 ed			amigappc

sys/net/files.net

@@ -1,4 +1,4 @@
-#	$NetBSD: files.net,v 1.15 2018/02/16 04:48:32 knakahara Exp $
+#	$NetBSD: files.net,v 1.16 2018/02/27 14:28:01 maxv Exp $
 
 # XXX CLEANUP
 define	net
@@ -12,7 +12,6 @@ file	net/if_arcsubr.c		arcnet			needs-flag
 file	net/if_atmsubr.c		atm
 file	net/if_bridge.c			bridge			needs-flag
 file	net/bridgestp.c			bridge
-file	net/if_ecosubr.c		eco
 file	net/if_etherip.c		etherip			needs-flag
 file	net/if_ethersubr.c		ether | fddi | netatalk | token |
 					    wlan		needs-flag