remove reference to Gitosis

Author: jnavila

book/04-git-server/sections/git-on-a-server.asc

@@ -70,7 +70,7 @@ It's important to note that this is literally all you need to do to run a useful
 You're ready to go – nothing else needed.
 
 In the next few sections, you'll see how to expand to more sophisticated setups.
-This discussion will include not having to create user accounts for each user, adding public read access to repositories, setting up web UIs, using the Gitosis tool, and more.
+This discussion will include not having to create user accounts for each user, adding public read access to repositories, setting up web UIs and more.
 However, keep in mind that to collaborate with a couple of people on a private project, all you _need_ is an SSH server and a bare repository.
 
 ==== Small Setups