Drop the experimental Configurator

Marlin/configurator/config/Configuration.h

Marlin/configurator/config/Configuration_adv.h

Marlin/configurator/config/_htaccess

Marlin/configurator/config/boards.h

Marlin/configurator/config/language.h

Marlin/configurator/css/configurator.css

Marlin/configurator/css/logo.png

Marlin/configurator/index.html

Marlin/configurator/js/FileSaver.min.js

Marlin/configurator/js/binaryfileuploader.js

Marlin/configurator/js/binarystring.js

Marlin/configurator/js/configurator.js

Marlin/configurator/js/jcanvas.js

Marlin/configurator/js/jquery-2.1.3.min.js

Marlin/configurator/js/jstepper.js

Marlin/configurator/js/jszip.min.js