Remove unused rendering from Kitchen Environments.

[jhejna]

Description

By default the Franka Kitchen environments render very large images, which are not used by policies. This makes running evaluation with the gym API much slower than it needs to be. Simply commenting out this line makes everything much faster.

Fixes evaluation speed for Franka Kitchen environments

Type of change

Bug fix (non-breaking change which fixes an issue)

Checklist:

• [ ] I have run the pre-commit checks with pre-commit run --all-files (see CONTRIBUTING.md instructions to set it up)
• [ ] 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

[pseudo-rnd-thoughts]

Thanks for the PR, that is very interesting and important to note.

As users might use this data, we will not change this in main but if this is an issue, I would change your local install with this update.

Could you change the PR to just add a comment on the environment to note this issue and the solution for other users.