Remove example runcards

[Edoardo-Pedicillo]

After an internal discussion, we agreed to remove all the runcards that are not used in the documentation and testing, to have smoother maintainability.

Since the folder runcards does not contain runcards anymore, I have recalled it as calibration_scripts

Checklist:

• Reviewers confirm new code works as expected.
• Tests are passing.
• Coverage does not decrease.
• Documentation is updated.
• Compatibility with Qibo modules (Please edit this section if the current pull request is not compatible with the following branches).
  • Qibo: master
  • Qibolab: main
  • Qibolab_platforms_qrc: main

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.53%. Comparing base (bb83a11) to head (ffec1c0).
Report is 57 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1015      +/-   ##
==========================================
+ Coverage   97.46%   97.53%   +0.06%     
==========================================
  Files         123      123              
  Lines        9722     9722              
==========================================
+ Hits         9476     9482       +6     
+ Misses        246      240       -6     

Flag	Coverage Δ
unittests	97.53% <ø> (+0.06%)	⬆️

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see 2 files with indirect coverage changes

[andrea-pasquale]

Thanks @Edoardo-Pedicillo.
Before merging couldyou please update also the documentation?
There in an explicit reference to the runcards folder that you removed in this file
https://github.com/qiboteam/qibocal/blob/clean_runcards/doc/source/getting-started/
example.rst

EDIT: also here https://github.com/qiboteam/qibocal/tree/main/runcards/calibration_tutorial