AFAIK no one uses the wifi.startsmart() and wifi.stopsmart(). Removing
them frees up an extra 20-25K of Flash to use as filesystem. So I have
added a new config define WIFI_SMART_ENABLE which is enabled by default
so the default functionality is the same, but if this is commented out
then this code is omitted.
I have also removed wofs and upgrade from this build as we no longer
support these.