feat: cleaned up config.txt

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Please make sure your Merge Request is ready to be merged:

• if the Merge Request is about a new feature, an improvement or an important bugfix, amend RELEASE-NOTES.md
• you respected conventional commits
• you updated the wiki Please it is important 🙏 !

The results of the build can give you clues about what is missing in your Merge Request.

Changes :

• kernel set to 6.1.77

Tests to do:

• Tests on rpizero2 in gpi case (first version)

Related to :

• Link to related Merge Requests or Issues