Variable: inhibit-splash-screen
inhibit-splash-screen is an alias and customizable for
inhibit-startup-screen, defined in startup.el.gz.
Value
nil
Documentation
Non-nil inhibits the startup screen.
This is for use in your personal init file (but NOT site-start.el), once you are familiar with the contents of the startup screen.
Probably introduced at or before Emacs version 22.1.