Remove dead code from LGTM alerts.

These are all overwritten later on without being read.

Author: QuLogic

lib/matplotlib/axis.py

@@ -2251,7 +2251,6 @@ def set_inverted(self, inverted):
 
     def set_default_intervals(self):
         # docstring inherited
-        xmin, xmax = 0., 1.
         # only change view if dataLim has not changed and user has
         # not changed the view:
         if (not self.axes.dataLim.mutatedx() and
@@ -2512,7 +2511,6 @@ def set_inverted(self, inverted):
 
     def set_default_intervals(self):
         # docstring inherited
-        ymin, ymax = 0., 1.
         # only change view if dataLim has not changed and user has
         # not changed the view:
         if (not self.axes.dataLim.mutatedy() and

lib/matplotlib/backends/web_backend/js/nbagg_mpl.js

@@ -228,11 +228,6 @@ mpl.figure.prototype._canvas_extra_style = function (el) {
 };
 
 mpl.figure.prototype._key_event_extra = function (event, _name) {
-    var manager = IPython.notebook.keyboard_manager;
-    if (!manager) {
-        manager = IPython.keyboard_manager;
-    }
-
     // Check for shift+enter
     if (event.shiftKey && event.which === 13) {
         this.canvas_div.blur();

lib/matplotlib/figure.py

@@ -1447,8 +1447,6 @@ def subfigures(self, nrows=1, ncols=1, squeeze=True,
             # Returned axis array will be always 2-d, even if nrows=ncols=1.
             return sfarr
 
-        return sfarr
-
     def add_subfigure(self, subplotspec, **kwargs):
         """
         Add a `~.figure.SubFigure` to the figure as part of a subplot
@@ -1823,7 +1821,6 @@ def _do_layout(gs, mosaic, unique_ids, nested):
             dict[label, Axes]
                 A flat dict of all of the Axes created.
             """
-            rows, cols = mosaic.shape
             output = dict()
 
             # we need to merge together the Axes at this level and the axes

lib/matplotlib/markers.py

@@ -805,7 +805,6 @@ def _set_plus_filled(self):
         self._transform = Affine2D()
         self._snap_threshold = 5.0
         self._joinstyle = JoinStyle.miter
-        fs = self.get_fillstyle()
         if not self._half_fill():
             self._path = self._plus_filled_path
         else:

lib/matplotlib/offsetbox.py

@@ -475,13 +475,6 @@ def get_extent_offsets(self, renderer):
         if not whd_list:
             return 2 * pad, 2 * pad, pad, pad, []
 
-        if self.height is None:
-            height_descent = max(h - yd for w, h, xd, yd in whd_list)
-            ydescent = max(yd for w, h, xd, yd in whd_list)
-            height = height_descent + ydescent
-        else:
-            height = self.height - 2 * pad  # width w/o pad
-
         hd_list = [(h, yd) for w, h, xd, yd in whd_list]
         height, ydescent, yoffsets = _get_aligned_offsets(hd_list,
                                                           self.height,