Use pre-commit on tox lint.

Author: hramezani

tox.ini

@@ -52,11 +52,9 @@ commands =
     flake8 simple_history
 
 [testenv:lint]
-deps = -rrequirements/lint.txt
+deps = pre-commit
 commands =
-    isort --check --diff docs simple_history runtests.py setup.py
-    black --check --diff docs simple_history runtests.py setup.py
-    flake8 simple_history
+    pre-commit run --all-files
 
 [testenv:docs]
 changedir = docs