From: Lev Lamberov <dogsleg@debian.org>
Subject: Clean documentation

This patch removes screenshot from the documentation.

--- a/README.md
+++ b/README.md
@@ -91,11 +91,3 @@ processes simultaneously. Revert with
 
 Tested with Scryer Prolog 0.8.119 and SWI-Prolog 8.1.24, using Emacs
 versions 26.1 and&nbsp;27.0.50.
-
-# Screenshot
-
-Here is a sample interaction, using
-[CLP(ℤ)&nbsp;constraints](https://www.metalevel.at/prolog/clpz) to
-relate a number to its factorial:
-
-![Factorial](factorial.png)