Updates for flake8 3.7

.pre-commit-config.yaml

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 74f4c12..8bd0fdc 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -11,22 +11,25 @@
     -   id: debug-statements
     -   id: name-tests-test
     -   id: requirements-txt-fixer
+-   repo: https://gitlab.com/pycqa/flake8
+    rev: 3.7.1
+    hooks:
     -   id: flake8
 -   repo: https://github.com/pre-commit/mirrors-autopep8
     rev: v1.4.3
     hooks:
     -   id: autopep8
 -   repo: https://github.com/pre-commit/pre-commit
-    rev: v1.13.0
+    rev: v1.14.2
     hooks:
     -   id: validate_manifest
 -   repo: https://github.com/asottile/reorder_python_imports
-    rev: v1.3.4
+    rev: v1.3.5
     hooks:
     -   id: reorder-python-imports
         language_version: python2.7
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v1.11.0
+    rev: v1.11.1
     hooks:
     -   id: pyupgrade
 -   repo: https://github.com/asottile/add-trailing-comma

pre_commit_hooks/pretty_format_json.py

diff --git a/pre_commit_hooks/pretty_format_json.py b/pre_commit_hooks/pretty_format_json.py
index fb1c487..363037e 100644
--- a/pre_commit_hooks/pretty_format_json.py
+++ b/pre_commit_hooks/pretty_format_json.py
@@ -42,7 +42,6 @@
 
 
 def parse_topkeys(s):
-    # type: (str) -> array
     return s.split(',')