revert changes to audio mixer as we no longer need it to handle Audio… #1445

	name: Ruff - Checks
	on: push
	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v4
	with:
	python-version: "3.9"

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install ruff

	- name: Ruff livekit-api
	run: ruff check --output-format=github .

	- name: Check format
	run: ruff format --check .

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