Remove requirements in molecule.yml

[zhan9san]

Could we remove requirements in molecule.yml?

Currently, requirements can be defined in molecule.yml like below.

dependency:
  name: galaxy
  options:
    requirements-file: requirements.yml

Besides, ansible-compat try to install requirements from requirements.yml, roles/requirements.yml and collections/requirements.yml, referring to ansible_compat/runtime.py#L322-L327

So we have two places to define requirements, it may make users confused.

Would it be possible to keep only one place to define requirements?

If we do so, the execute in ansible_galaxy folder would be removed with clean code.
https://github.com/ansible-community/molecule/blob/d263e982dec4379dbd93a3f2addd6c5501b1e4ad/src/molecule/dependency/ansible_galaxy/base.py#L126-L131

Reference: installing-roles-and-collections-from-the-same-requirements-yml-file