Remove unused imports

Author: timhoffm

lib/matplotlib/backends/backend_nbagg.py

@@ -17,7 +17,7 @@
     # Jupyter/IPython 3.x or earlier
     from IPython.kernel.comm import Comm
 
-from matplotlib import cbook, is_interactive
+from matplotlib import is_interactive
 from matplotlib._pylab_helpers import Gcf
 from matplotlib.backend_bases import _Backend, NavigationToolbar2
 from matplotlib.backends.backend_webagg_core import (

lib/matplotlib/backends/backend_qt5.py

@@ -1,7 +1,6 @@
 import functools
 import importlib
 import os
-import re
 import signal
 import sys
 import traceback

lib/matplotlib/image.py

@@ -6,7 +6,6 @@
 import math
 import os
 import logging
-from numbers import Number
 from pathlib import Path
 
 import numpy as np

lib/mpl_toolkits/axisartist/axislines.py

@@ -41,7 +41,7 @@
 
 import numpy as np
 
-from matplotlib import _api, cbook, rcParams
+from matplotlib import _api, rcParams
 import matplotlib.axes as maxes
 from matplotlib.path import Path
 from mpl_toolkits.axes_grid1 import mpl_axes