The attached patch removes the KB_IOPENER option from wscons.

Rationale:

This code was imported from NetBSD, where it was added to support the
non-standard keyboard layout of an internet appliance from around the
year 2000.

There is no sign that anybody has ever used this code on OpenBSD, and the
hardware that it is designed to work with is never going to be a practical
platform for current OpenBSD versions.

--- dev/wscons/wsksymdef.h
+++ dev/wscons/wsksymdef.h
@@ -748,7 +748,6 @@
 #define KB_SWAPCTRLCAPS		0x00000008 /* swap Left-Control and Caps-Lock */
 #define KB_DVORAK		0x00000010 /* Dvorak layout */
 #define KB_METAESC		0x00000020 /* generate ESC prefix on ALT-key */
-#define KB_IOPENER		0x00000040 /* f1-f12 -> ESC,f1-f11 */
 #define KB_NOENCODING		0x00000080 /* no encodings available */
 #define KB_APPLE		0x00010000 /* Apple specific layout */
 #define KB_COLEMAK		0x02000000 /* Colemak layout */
@@ -792,7 +791,6 @@
 	{ KB_SWAPCTRLCAPS, "swapctrlcaps" }, \
 	{ KB_DVORAK,	"dvorak" }, \
 	{ KB_METAESC,	"metaesc" }, \
-	{ KB_IOPENER,	"iopener" }, \
 	{ KB_NOENCODING, "noencoding" }, \
 	{ KB_APPLE,	"apple" }, \
 	{ KB_COLEMAK,	"colemak" }
--- dev/pckbc/wskbdmap_mfii.c
+++ dev/pckbc/wskbdmap_mfii.c
@@ -623,22 +623,6 @@
     KC(58),  KS_Cmd1,		KS_Control_L,
 };
 
-static const keysym_t pckbd_keydesc_iopener[] = {
-/*  pos      command		normal		shifted */
-    KC(59),  KS_Cmd_Debugger,	KS_Escape,
-    KC(60),  KS_Cmd_Screen0,	KS_f1,
-    KC(61),  KS_Cmd_Screen1,	KS_f2,
-    KC(62),  KS_Cmd_Screen2,	KS_f3,
-    KC(63),  KS_Cmd_Screen3,	KS_f4,
-    KC(64),  KS_Cmd_Screen4,	KS_f5,
-    KC(65),  KS_Cmd_Screen5,	KS_f6,
-    KC(66),  KS_Cmd_Screen6,	KS_f7,
-    KC(67),  KS_Cmd_Screen7,	KS_f8,
-    KC(68),  KS_Cmd_Screen8,	KS_f9,
-    KC(87),  KS_Cmd_Screen9,	KS_f10,
-    KC(88),			KS_f11,
-};
-
 static const keysym_t pckbd_keydesc_ru[] = {
 /*  pos      normal		shifted		altgr			shift-altgr */
     KC(7),   KS_6,		KS_asciicircum,	KS_6,			KS_comma,
@@ -1151,7 +1135,6 @@
 	KBD_MAP(KB_US | KB_DVORAK,	KB_US,	pckbd_keydesc_us_dvorak),
 	KBD_MAP(KB_US | KB_COLEMAK,	KB_US,	pckbd_keydesc_us_colemak),
 	KBD_MAP(KB_US | KB_SWAPCTRLCAPS, KB_US,	pckbd_keydesc_swapctrlcaps),
-	KBD_MAP(KB_US | KB_IOPENER,	KB_US,	pckbd_keydesc_iopener),
 	KBD_MAP(KB_UK | KB_SWAPCTRLCAPS, KB_UK,	pckbd_keydesc_swapctrlcaps),
 	KBD_MAP(KB_JP | KB_SWAPCTRLCAPS, KB_JP,	pckbd_keydesc_swapctrlcaps),
 	KBD_MAP(KB_FR | KB_SWAPCTRLCAPS, KB_FR,	pckbd_keydesc_swapctrlcaps),
@@ -1161,8 +1144,6 @@
 	KBD_MAP(KB_US | KB_DVORAK | KB_SWAPCTRLCAPS,	KB_US | KB_DVORAK,
 		pckbd_keydesc_swapctrlcaps),
 	KBD_MAP(KB_US | KB_COLEMAK | KB_SWAPCTRLCAPS,	KB_US | KB_COLEMAK,
-		pckbd_keydesc_swapctrlcaps),
-	KBD_MAP(KB_US | KB_IOPENER | KB_SWAPCTRLCAPS,	KB_US | KB_IOPENER,
 		pckbd_keydesc_swapctrlcaps),
 	KBD_MAP(KB_ES,			KB_US,	pckbd_keydesc_es),
 	KBD_MAP(KB_BE,			KB_US,	pckbd_keydesc_be),