Remove unnecessary setuptools upgrade. #729

	name: Lint

	on: [push, pull_request]

	jobs:
	lint:
	name: ${{ matrix.python-version }} on ${{ matrix.os }}
	runs-on: ${{ matrix.os }}

	strategy:
	matrix:
	python-version: [3.7]
	os: [ubuntu-latest]

	steps:
	- uses: actions/checkout@v1

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v1
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt
	pip install -r requirements_dev.txt

	- name: Lint with flake8
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics

	- name: Markdownlint
	uses: nosborn/[email protected]
	with:
	files: .

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