Remove -w support from wpa_supplicant README

wpa_supplicant dropped the -w option long long time ago..

Signed-off-by: Roy Marples <roy@marples.name>

wpa_supplicant/README

@@ -409,7 +409,7 @@ Command line options
 --------------------
 
 usage:
-  wpa_supplicant [-BddfhKLqqtuvwW] [-P<pid file>] [-g<global ctrl>] \
+  wpa_supplicant [-BddfhKLqqtuvW] [-P<pid file>] [-g<global ctrl>] \
         [-G<group>] \
         -i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] [-p<driver_param>] \
         [-b<br_ifname> [-N -i<ifname> -c<conf> [-C<ctrl>] [-D<driver>] \
@@ -435,7 +435,6 @@ options:
   -q = decrease debugging verbosity (-qq even less)
   -u = enable DBus control interface
   -v = show version
-  -w = wait for interface to be added, if needed
   -W = wait for a control interface monitor before starting
   -N = start describing new interface
   -m = Configuration file for the P2P Device