rm wave and exp transmission loss variant

[JakobEliasWagner]

Description

Removes the wave and exp variant of the transmission loss dataset. The encoding performed by these datasets should either be performed during preprocessing or in the network itself.

Which issue does this PR tackle?

• The exp and wave variant of the transmission loss dataset are hard to maintain.
• Both operations performed by these variants of the compact dataset should be performed in a different place and are not responsibility of the dataset.

How does it solve the problem?

• Removes exp and wave variant of the transmission loss dataset.

How are the changes tested?

• Unit-tests:
  • Old unit tests run without new errors.

Checklist

• Documentation
  • All new features include documentation
  • README is updated
• CI/CD passes all pipeline checks
• Post Merge
  • Delete the feature branch (if applicable).
  • Update related issues or project boards.