env: cleanup old references

MANIFEST.in

@@ -1,4 +1,4 @@
 include requirements.txt
-include README.rst
+include README.md
 include CHANGELOG.rst
 include LICENSE

pyproject.toml

@@ -1,15 +1,3 @@
-[tool.black]
-line-length = 120
-target-version = ['py39']
-include = '\.pyi?$'
-preview = true
-
-[tool.isort]
-line_length = 120
-case_sensitive = true
-profile = "black"
-src_paths = ["."]
-
 [tool.pytest.ini_options]
 addopts = "--cov=. --cov-context=test --durations=0 --durations-min=1.0"
 asyncio_mode = "auto"
@@ -25,7 +13,6 @@ exclude_also = [
     ]
 
 [tool.pylint]
-ignored-classes=["twisted.internet.reactor"]
 ignore-paths=["docs/"]
 
 [tool.pylint."messages control"]

setup.py

@@ -57,9 +57,7 @@ def run_tests(self):
     py_modules=py_modules,
     install_requires=_read_reqs("requirements.txt"),
     extras_require={
-        "tornado": ["tornado"],
         "asyncio": ["aiohttp"],
-        "twisted": ["twisted", "treq"],
     },
     data_files=[(".", ["requirements.txt", "tests-requirements.txt"])],
     tests_require=_read_reqs("tests-requirements.txt"),