Switch to flake8 for static code analysis (#1328)

flake8 catches a wider net of mistakes than pycodestyle and is more
commonly used by the larger community. For example, it catches unused
imports, a few of which existed. These have since been removed.

Two "noqa" comments were added. One ignores the _compat.py file as it
has a large amount of Python version specific code. The second is in
utils.py which intentionally does not use an import.

1 files changed, 0 insertions, 1 deletions

diff --git a/redis/connection.py b/redis/connection.py
index a13bcd3..99c5f23 100755
--- a/redis/connection.py
+++ b/redis/connection.py
@@ -6,7 +6,6 @@ import errno
 import io
 import os
 import socket
-import sys
 import threading
 import warnings