Removing `QubitStateVector` (deprecated) from `test_apply.py` #2173

	name: Formatting check
	on:
	- pull_request

	jobs:
	black-pylint:
	runs-on: ubuntu-latest
	steps:
	- name: Cancel Previous Runs
	uses: styfle/[email protected]
	with:
	access_token: ${{ github.token }}

	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: 3.9

	- name: Install dependencies
	run: pip install black pylint==2.7.4

	- uses: actions/checkout@v2

	- name: Run Black
	run: \|
	black -l 100 pennylane_qiskit/ --check
	black -l 100 tests/ --check

	- name: Run Pylint (source files)
	if: always()
	run: pylint --rcfile .pylintrc $(find pennylane_qiskit -name "*.py")

	- name: Run Pylint (test files)
	if: always()
	run: pylint --rcfile tests/.pylintrc $(find tests -name "*.py")

Provide feedback