docs: update projects using the lib

Some of them don't use it anymore, some of them are archived.

Author: krzema12

docs/projects-using-this-library.md

@@ -1,23 +1,19 @@
 # Projects using this library
 
 * [aSoft-Ltd/oss](https://github.com/aSoft-Ltd/oss/blob/main/.github/workflows/)
-* [awscdk-dsl-kotlin](https://github.com/cloudshiftinc/awscdk-dsl-kotlin/tree/main/.github/workflows)
 * [ComposeOClock](https://github.com/Splitties/ComposeOClock/tree/main/.github/workflows)
 * [course-evals](https://github.com/opLetter/course-evals/tree/master/.github/workflows)
 * [factcast](https://github.com/factcast/factcast/tree/master/.github/kts)
 * [github-actions-typing](https://github.com/typesafegithub/github-actions-typing/tree/main/.github/workflows)
 * [github-workflows-kt](https://github.com/typesafegithub/github-workflows-kt/tree/main/.github/workflows) (this library - we [dogfood](https://en.wikipedia.org/wiki/Eating_your_own_dog_food), of course)
 * [gradle-release-plugin](https://github.com/cloudshiftinc/gradle-release-plugin/tree/main/.github/workflows)
-* [greenback](https://github.com/DoudemoEthernet/greenback/tree/main/.github/workflows)
 * [Jopiter](https://github.com/JopiterApp/jopiter-backend/tree/master/.github/workflows)
-* [kotlin-python](https://github.com/krzema12/kotlin-python/tree/python-backend/.github/workflows)
 * [markout](https://github.com/mfwgenerics/markout/tree/main/markout-github-workflows-kt)
 * [Petals](https://github.com/LeoColman/Petals/tree/main/.github/workflows)
 * [rankquest-studio](https://github.com/jillesvangurp/rankquest-studio/tree/main/.github/workflows)
 * [setup-wsl](https://github.com/Vampire/setup-wsl/tree/master/.github/workflows)
 * [snakeyaml-engine-kmp](https://github.com/krzema12/snakeyaml-engine-kmp/tree/main/.github/workflows)
 * [spring-cqs](https://github.com/prisma-capacity/spring-cqs/tree/main/.github/kts)
-* [tachiyomi-extensions-template](https://github.com/npgx/tachiyomi-extensions-template/tree/master/.github/workflows)
 * [twitch-announcement-discord-bot](https://github.com/NikkyAI/twitch-announcement-discord-bot/tree/main/.github/workflows)
 * [WalletConnectKotlinV2](https://github.com/WalletConnect/WalletConnectKotlinV2/tree/develop/.github/workflows/scripts)
 * [WiertarBot](https://github.com/kugo12/WiertarBot/tree/main/.github/workflows)