sockjsclient: remove unused structs
sockjsclient: remove unused structs

fatih/kite,ppknap/kite,wingyplus/kite,mischief/kite,ppknap/kite,leeola/kite,280455936/kite,koding/kite,wingyplus/kite,mischief/kite,rjeczalik/kite,fatih/kite,rjeczalik/kite,koding/kite,leeola/kite,rjeczalik/kite,280455936/kite,koding/kite,ppknap/kite