Remove outdated link to video demo installer (#3790)

Author: rmarquis

docs/index.rst

@@ -4,8 +4,6 @@ archinstall Documentation
 **archinstall** is library which can be used to install Arch Linux.
 The library comes packaged with different pre-configured installers, such as the default :ref:`guided` installer.
 
-A demo of the :ref:`guided` installer can be seen here: https://www.youtube.com/watch?v=9Xt7X_Iqg6E.
-
 Some of the features of Archinstall are:
 
 * **Context friendly.** The library always executes calls in sequential order to ensure installation-steps don't overlap or execute in the wrong order. It also supports *(and uses)* context wrappers to ensure cleanup and final tasks such as ``mkinitcpio`` are called when needed.