Remove startup split screen in Emacs

Edit your ~/.emacs file to add the following at the end:

;; open with single window
(setq inhibit-startup-screen t)
(add-hook 'emacs-startup-hook 'delete-other-windows)

Note: If ~/.emacs doesnt exist, just create it and paste the above code in it. On restarting Emacs, you’ll notice that the split window has disappeared.