Update README for Docsy changes

Author: Tim Bannister

README.md

@@ -30,22 +30,6 @@ git clone https://github.com/kubernetes/website.git
 cd website
 ```
 
-The Kubernetes website uses the [Docsy Hugo theme](https://github.com/google/docsy#readme). Even if you plan to run the website in a container, we strongly recommend pulling in the submodule and other development dependencies by running the following:
-
-### Windows
-
-```powershell
-# fetch submodule dependencies
-git submodule update --init --recursive --depth 1
-```
-
-### Linux / other Unix
-
-```bash
-# fetch submodule dependencies
-make module-init
-```
-
 ## Running the website using a container
 
 To build the site in a container, run the following: