diff --git a/lib/mpl_toolkits/mplot3d/art3d.py b/lib/mpl_toolkits/mplot3d/art3d.py
index 5fc62ad89beb..d3ed4ec173f6 100644
--- a/lib/mpl_toolkits/mplot3d/art3d.py
+++ b/lib/mpl_toolkits/mplot3d/art3d.py
@@ -6,11 +6,6 @@
 Module containing 3D artist code and functions to convert 2D
 artists into 3D versions which can be added to an Axes3D.
 """
-from __future__ import (absolute_import, division, print_function,
-                        unicode_literals)
-
-import six
-from six.moves import zip
 
 import math
 
@@ -225,12 +220,6 @@ class Line3DCollection(LineCollection):
     A collection of 3D lines.
     """
 
-    def __init__(self, segments, *args, **kwargs):
-        """
-        Keyword arguments are passed onto :func:`~matplotlib.collections.LineCollection`.
-        """
-        LineCollection.__init__(self, segments, *args, **kwargs)
-
     def set_sort_zpos(self, val):
         """Set the position to use for z-sorting."""
         self._sort_zpos = val
diff --git a/pytest.ini b/pytest.ini
index 2c6656899f86..c3b723fe29c8 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -87,7 +87,7 @@ pep8ignore =
     mpl_toolkits/axisartist/floating_axes.py E201 E225 E231 E261 E262 E271 E302 E303 E402 E501
     mpl_toolkits/axisartist/grid_finder.py E231 E261 E302 E303 E402
     mpl_toolkits/axisartist/grid_helper_curvelinear.py E221 E225 E231 E251 E261 E262 E271 E302 E303 E501
-    mpl_toolkits/mplot3d/art3d.py E203 E222 E225 E231 E501
+    mpl_toolkits/mplot3d/art3d.py E203 E222 E225 E231
     mpl_toolkits/mplot3d/axes3d.py E203 E225 E231 E271 E303 E402 E501 E502 E701
     mpl_toolkits/mplot3d/axis3d.py E201 E202 E203 E222 E231 E302 E303 E502
     mpl_toolkits/mplot3d/proj3d.py E231 E302 E303