Merge pull request matplotlib#24284 from ksunden/voxels_docstring

Remove comment about cmap from voxels docstring

Author: tacaswell

lib/mpl_toolkits/mplot3d/axes3d.py

@@ -2801,8 +2801,7 @@ def voxels(self, *args, facecolors=None, edgecolors=None, shade=True,
               last axis.
 
         shade : bool, default: True
-            Whether to shade the facecolors.  Shading is always disabled when
-            *cmap* is specified.
+            Whether to shade the facecolors.
 
         lightsource : `~matplotlib.colors.LightSource`
             The lightsource to use when *shade* is True.