I made some custom builds and Mavlink FTP seems to be removed

ArduCopter Copter 4.5
1

I see 2 lines like

Removing AP_MAVLINK_FTP_ENABLED
Removing AP_MAVLINK_FTP_ENABLED

and I do not unselect it. I do not see warming that some module I requested would be removed and why? (e.g. no space for it)

I setup my build server.