Update DEVELOPMENT.md

Author: intitni

DEVELOPMENT.md

@@ -27,8 +27,6 @@ Most of the logics are implemented inside the package `Core`.
 
 ## Building and Archiving the App
 
-To get started, create a `Secrets.xcconfig` file at the root directory. You can use the `Secrets.sample.xcconfig` as a reference.
-
 This project includes a Git submodule, `copilot.vim`, so you will need to either initialize the submodule or download it from the [copilot.vim](https://github.com/github/copilot.vim) repository.
 
 Finally, archive the Copilot for Xcode target.