Delete Python 2->3.4 runtime deps and test pins

.pre-commit-config.yaml

@@ -128,32 +128,13 @@ repos:
     - types-backports
     - types-pyOpenSSL
     - types-requests
-    - types-six
     args:
     - --install-types
     - --non-interactive
     - --python-version=3.5
     - --txt-report=.tox/.tmp/.mypy/
     - cheroot/
     pass_filenames: false
-  - id: mypy
-    alias: mypy-py27
-    name: MyPy, for Python 2.7
-    additional_dependencies:
-    - lxml
-    - typed-ast
-    - types-backports
-    - types-pyOpenSSL ~= 21.0  # Last interface supporting Python 2.7
-    - types-requests
-    - types-six
-    - typing
-    args:
-    - --install-types
-    - --non-interactive
-    - --python-version=2.7
-    - --txt-report=.tox/.tmp/.mypy/
-    - cheroot/
-    pass_filenames: false
 
 - repo: local
   hooks:
@@ -195,7 +176,6 @@ repos:
     - pypytools
     - requests_toolbelt
     - requests_unixsocket
-    - six
     - Sphinx
 
 - repo: local

cheroot/test/_pytest_plugin.py

@@ -8,7 +8,6 @@
 __metaclass__ = type
 
 import pytest
-import six
 
 
 pytest_version = tuple(map(int, pytest.__version__.split('.')))
@@ -46,9 +45,6 @@ def pytest_load_initial_conftests(early_config, parser, args):
         'pytest.PytestUnraisableExceptionWarning:_pytest.unraisableexception',
     ))
 
-    if six.PY2:
-        return
-
     # NOTE: `ResourceWarning` does not exist under Python 2 and so using
     # NOTE: it in warning filters results in an `_OptionError` exception
     # NOTE: being raised.