Drop implementation details from quickstart prereqs

Author: aneta-petrova

guides/common/modules/ref_system-requirements-quickstart.adoc

@@ -27,7 +27,6 @@ endif::[]
 
 The installation requires {project-minimum-memory} of memory.
 
-The Foreman installer uses Puppet to install Foreman.
 This guide assumes that you have a newly installed operating system, on which the installer will setup Foreman, a Puppet server, and the Smart Proxy by default.
 
 .Additional resources