misc(audio): delete crate for now

[mfuntowicz]

Summary

This Pull Request removes the hfendpoints-audio module and all related references across the workspace.
It also eliminates dependencies, configurations, and bindings tied to this module.

Main Changes:

Removed hfendpoints-audio module:

• Deleted hfendpoints-audio/Cargo.toml and its source code (hfendpoints-audio/src/lib.rs).

Updated dependencies:

• Removed hfendpoints-audio references from Cargo.toml in other modules.

Modified Python bindings:

• Excluded the audio submodule from the Python package setup in hfendpoints.

Cleaned module references:

• References to hfendpoints-audio have been fully removed from hfendpoints/src/lib.rs.

The overall goal is to deprecate and completely remove the functionality and dependencies of hfendpoints-audio.