Win32: [DOC] No extlibs file, no patch is needed

Author: nobu

doc/windows.md

@@ -79,14 +79,13 @@ make
 
 4.  If you want to build from GIT source, following commands are required.
     * git
-    * patch
     * sed
     * ruby 3.0 or later
 
     You can use [scoop](https://scoop.sh/) to install them like:
 
     ```
-    scoop install git patch sed ruby
+    scoop install git sed ruby
     ```
 
 5.  You need to install required libraries using [vcpkg](https://vcpkg.io/) on