Update how-to-build.md

Author: StanleyGoldman

docs/contributing/how-to-build.md

@@ -29,16 +29,6 @@ The `GitHub.Unity.sln` solution includes several projects:
 
 ## How to Build
 
-Clone the repository and its submodules in a git GUI client that supports Git LFS or via the command line with the following commands
-
-```
-git lfs clone https://github.com/github-for-unity/Unity
-cd Unity
-git submodule init
-git submodule deinit script
-git submodule update
-```
-
 ### Visual Studio
 
 To build with Visual Studio 2015 open the solution file `GitHub.Unity.sln`. Select `Build Solution` in the `Build` menu.