remove .github/workflows/main.yml

[finozzifa]

Changes proposed in this Pull Request

This pull request proposes to remove the main.yml workflow file from .github/workflows.

This is because this workflow file prompts the job that updates the contributors page. We do not need this functionality in OET pypsa-earth fork.

The workflow file was anyway leading to the following error, making the CI fail.

Run akhilmhdh/[email protected] with: image_size: 100 readme_path: README.md use_username: false columns_per_row: 6 collaborators: direct commit_message: docs(contributor): contrib-readme-action has updated readme auto_detect_branch_protection: true pr_title_on_protected: docs(contributor): contributors readme action update env: GITHUB_TOKEN: *** Error: Resource not accessible by integration

Checklist

• I consent to the release of this PR's code under the AGPLv3 license and non-code contributions under CC0-1.0 and CC-BY-4.0.
• I tested my contribution locally and it seems to work fine.
• Code and workflow changes are sufficiently documented.
• Newly introduced dependencies are added to envs/environment.yaml and doc/requirements.txt.
• Changes in configuration options are added in all of config.default.yaml and config.tutorial.yaml.
• Add a test config or line additions to test/ (note tests are changing the config.tutorial.yaml)
• Changes in configuration options are also documented in doc/configtables/*.csv and line references are adjusted in doc/configuration.rst and doc/tutorial.rst.
• A note for the release notes doc/release_notes.rst is amended in the format of previous release notes, including reference to the requested PR.