Remove Lualtek deprecated libs

[LasaleFamine]

Both:
https://github.com/lualtek/lualtek-rak3172
https://github.com/lualtek/buttino-handler

Are now:
https://github.com/lualtek/lualtek-rakrui
https://github.com/lualtek/buttino-rak

[github-actions]

Hi @LasaleFamine.
Your pull request has been detected as something other than a Library Manager submission.
A maintainer will need to review it before it can be merged.

If you intended to submit a library, please check the instructions and update your pull request if necessary:
https://github.com/arduino/library-registry/blob/main/README.md#instructions

[per1234]

Hello @LasaleFamine. I am confirming your request.

Unlike submissions, this type of request is still handled manually. The Library Manager index maintainer occasionally comes through to clear all the outstanding requests. They will merge this pull request when it is done. You will get a notification from GitHub at that time.

[MatteoPologruto]

Done:

2024/02/29 14:59:47 Loaded 6703 libraries from DB
Removing LualtekRAK3172
Success!

Done:

2024/02/29 15:01:46 Loaded 6702 libraries from DB
Removing LualtekButtinoHandler
Success!