message: remove migration docs copy
diff: @@ -18,8 +18,6 @@ npm install @primer/components
  ## Usage
  -**If you are upgrading from a version before `1.0.0-beta`, please read the [migration docs](migrating.md).**
  -
  All of our components are exported by name from `@primer/components`, so you can import them with:
  ```js
  