minor #12347 Remove roadmap links for now (pjedrzejewski)

This PR was merged into the 1.10-dev branch.

Discussion
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| Q               | A
| --------------- | -----
| Branch?         | master
| Bug fix?        | no
| New feature?    | no
| BC breaks?      | no
| Deprecations?   | no
| Related tickets | 
| License         | MIT

We are working on a new road mapping process and structure, so let's hide this for now and bring it back when it is ready.

Commits
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fa1503c Remove roadmap links for now

README.md

@@ -25,13 +25,6 @@ Follow the [Getting started with Sylius tutorial](https://docs.sylius.com/en/lat
 
 Documentation is available at [docs.sylius.com](https://docs.sylius.com).
 
-🛣️ Roadmap
-----------
-
-Our agile roadmap is available publicly on [our website](https://sylius.com/roadmap/).
-
-If you'd like to contribute, please post your ideas via [Github Issues](https://github.com/Sylius/Sylius/issues).
-
 🤝 Community
 ------------