Removed no longer necessary pre-commit update workflow

[jacobcook1995]

Description

@dalonsoa pointed out pre-commit hook updates are handled automatically by the pre-commit-ci bot. As such the Github action to update them (defined in pre-commit_autoupdate.yml) is redundant. So this pull request removes the file, which helpfully also fixes issue #71.

Fixes #71

Type of change

• New feature (non-breaking change which adds functionality)
• Optimization (back-end change that speeds up the code)
• Bug fix (non-breaking change which fixes an issue)

Key checklist

• Make sure you've run the pre-commit checks: $ pre-commit run -a
• All tests pass: $ poetry run pytest

Further checks

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works

[codecov-commenter]

Codecov Report

Merging #73 (aab402e) into develop (109bc86) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop      #73   +/-   ##
========================================
  Coverage    75.86%   75.86%           
========================================
  Files            3        3           
  Lines           58       58           
========================================
  Hits            44       44           
  Misses          14       14           

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[dalonsoa]

All good!