[source] base-files: remove non-working filter option for wifi detect

[LEDE Commits]

blogic pushed a commit to source.git, branch master:
https://git.lede-project.org/5a8a986dd5808555567fd5791f05cf2ae504aa42

commit 5a8a986dd5808555567fd5791f05cf2ae504aa42
Author: Christian Lamparter <chunkeey at googlemail.com>
AuthorDate: Thu Sep 29 19:55:33 2016 +0200

    base-files: remove non-working filter option for wifi detect
    
    This patch removes the non-working wifi driver filter for
    the wifi detection script.
    
    I figured that rather than replacing ${2:-$DRIVERS} with
    ${1:-$DRIVERS}, it would be better to remove it. Nobody
    needed it in the previous years.
    
    Signed-off-by: Christian Lamparter <chunkeey at gmail.com>
---
 package/base-files/files/sbin/wifi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/package/base-files/files/sbin/wifi b/package/base-files/files/sbin/wifi
index 2476414..6bd3544 100755
--- a/package/base-files/files/sbin/wifi
+++ b/package/base-files/files/sbin/wifi
@@ -146,7 +146,7 @@ wifi_reload() {
 }
 
 wifi_detect() {
-	for driver in ${2:-$DRIVERS}; do (
+	for driver in $DRIVERS; do (
 		if eval "type detect_$driver" 2>/dev/null >/dev/null; then
 			eval "detect_$driver" || echo "$driver: Detect failed" >&2
 		else
@@ -227,7 +227,7 @@ scan_wifi
 
 case "$1" in
 	down) wifi_updown "disable" "$2";;
-	detect) wifi_detect "$2";;
+	detect) wifi_detect ;;
 	status) ubus_wifi_cmd "status" "$2";;
 	reload) wifi_reload "$2";;
 	reload_legacy) wifi_reload_legacy "$2";;