Cleanup muon ring calibration code

Description

This MR drops all the unnecessary parameters, steps and imports for the muon calibration.

Related Issue

Close #34 (closed)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.