Removes custom sim params from Isaac-Stack-Cube-Franka-IK-Rel-v0

[peterd-NV]

Description

This change removes the custom sim parameters used for the Isaac-Stack-Cube-Franka-IK-Rel-v0 env, setting it to use the same sim parameters as the base environment config class and aligning it with the other Franka stacking environments. This change increases simulation stability and performance.

Type of change

• Performance enhancement (non-breaking change which improves an existing feature)

Screenshots

Please attach before and after screenshots of the change if applicable.

Checklist

• I have run the pre-commit checks with ./isaaclab.sh --format
• [] 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
• I have updated the changelog and the corresponding version in the extension's config/extension.toml file
• I have added my name to the CONTRIBUTORS.md or my name already exists there