Remove MicroBin (Unmaintained since Jul 2023)

[Rabenherz112]

• ref: #1
• ERROR:awesome_lint.py: MicroBin: last updated -383 days, 1:29:06.965107 ago, older than 365 days
• The Maintenance of MicroBin has been discussed already in https://github.com/szabodanika/microbin/issues/249 (including by the owner)

  The project is not abandoned (will set it to archived if/when that happens) but not exactly maintained at the moment either

• Therfore since it is currently in a unmainted state, I would be for removing it from the list until it is maintained again.