- removes unused gulp

Author: baywet

NOTICES.md

@@ -15,9 +15,3 @@ morgan, Copyright (c) by Douglas Christopher Wilson, is available under [The MIT
 serve-favicon, Copyright (c) by Douglas Christopher Wilson, is available under [The MIT License](https://raw.githubusercontent.com/expressjs/serve-favicon/master/LICENSE).
 
 socket.io, Copyright (c) by Automattic, is available under [The MIT License](https://raw.githubusercontent.com/socketio/socket.io/master/LICENSE).
-
-gulp, Copyright (c) by Fractal, is available under [The MIT License](https://raw.githubusercontent.com/gulpjs/gulp/master/LICENSE).
-
-gulp-nodemon, Copyright (c) by Jackson Gariety, is available under [The BSD 2-clause "Simplified" License](http://spdx.org/licenses/BSD-2-Clause).
-
-gulp-plumber, Copyright (c) by Vsevolod Strukchinsky, is available under [The MIT License](https://raw.githubusercontent.com/floatdrop/gulp-plumber/master/LICENSE).