Remove GitHub Desktop from installing instructions

Author: billygriffin

book/01-introduction/sections/installing.asc

@@ -65,12 +65,6 @@ Note that this is a project called Git for Windows, which is separate from Git i
 To get an automated installation you can use the https://chocolatey.org/packages/git[Git Chocolatey package].
 Note that the Chocolatey package is community maintained.
 
-Another easy way to get Git installed is by installing GitHub Desktop.
-The installer includes a command line version of Git as well as the GUI.
-It also works well with PowerShell, and sets up solid credential caching and sane CRLF settings.(((PowerShell)))(((CRLF)))(((credential caching)))
-We'll learn more about those things a little later, but suffice it to say they're things you want.
-You can download this from the https://desktop.github.com[GitHub Desktop website].
-
 ==== Installing from Source
 
 Some people may instead find it useful to install Git from source, because you'll get the most recent version.