chore: retire macro

sections/api/primary/css-prop.mdx

@@ -38,6 +38,8 @@ Note that you don't even have to add the import, the Babel plugin does that auto
 
 #### Usage with the Babel macro
 
+> This functionality was removed in v6.1 due to lack of usage and unnecessary bloat for other consumers.
+
 You can use the [Babel macro](/docs/tooling#babel-macro) to make this work in `create-react-app`. Unfortunately, Babel macros only run when imported so **the import can not be added automatically.** The above code works perfectly if you add the import to the macro manually:
 
 ```tsx

sections/faqs/create-react-app.mdx

@@ -3,7 +3,3 @@
 The basic functionality of the library should work out of the box like any other library.
 
 However, if you want to do server-side rendering or take advantage of some of the advanced capabilities of the [styled-components babel plugin](/docs/tooling#babel-plugin) without ejecting you'll need to set up [`react-app-rewired`](https://github.com/timarney/react-app-rewired) and [`react-app-rewire-styled-components`](https://github.com/withspectrum/react-app-rewire-styled-components).
-
-### Babel Macro
-
-As of create-react-app v2, there is now an alternative to setting up `react-app-rewired` through use of "babel macros". See the [documentation for the styled-components babel macro](/docs/tooling#babel-macro) for setup and usage.

sections/tooling/babel-macro.mdx

@@ -1,4 +1,6 @@
-## Babel Macro | v4
+## Babel Macro | v4 | v5
+
+> This functionality was removed in v6.1 due to lack of usage and unnecessary bloat for other consumers.
 
 [Babel macros](https://babeljs.io/blog/2017/09/11/zero-config-with-babel-macros) are quickly gaining steam as a full-featured option to allow advanced code transpilation for zero-config projects like [create-react-app](https://github.com/facebook/create-react-app).