chore: remove docs.yml

[apskhem]

Description

The docs.yml workflows were integrated into the standard ci.yml workflows, and we need to remove the unused docs.yml file.

Related Issue(s)

e.g., Closes #112

Description of Changes

• Removed docs.yml in GitHub Workflows.

Please confirm the following checks

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream module

[stevenj]

OK

[Mr-Leshiy]

LGTM