Remove dependency on unused sql module
Remove dependency on unused sql module

Change-Id: I102bcb81ec53d022480e81a3632b93d42bf33403
Reviewed-by: Kurt Pattyn <da83d6ada5df79ff647b4271d0d788c6f1bafca2@gmail.com>
Reviewed-by: Davide Pesavento <12972e6f3f5e3567d4d7a35a993678077bef5660@gmail.com>

remimixlr/QtWebsocket,pixty/qtwebsockets,pixty/qtwebsockets