rc: wan.c: - do not restart wireless at function start_wan()

Note: At power-on/boot/reboot/restart we just started wireless interfaces at init_main() (function start_wl()) for example.
(restart wireless twice not needed; restart introduced with multiwan feature);

last change/improvement see also 2c95d1d011

Tested with AP-Mode and Multiwan DHCP (3 WANs), working correct

release/src-rt-6.x.4708/router/rc/wan.c

@@ -913,10 +913,6 @@ void start_wan(int mode)
 	if (mwan_num < 1 || mwan_num > MWAN_MAX)
 		mwan_num = 1;
 
-	syslog(LOG_INFO, "start_wan: Restarting wireless");
-	stop_wireless();
-	start_wireless();
-
 	syslog(LOG_INFO, "MultiWAN: MWAN is %d (max %d)", mwan_num, MWAN_MAX);
 
 	for (wan_unit = 1; wan_unit <= mwan_num; ++wan_unit) {