deprecated cm api removal documentation

UFEddy · UFEddy · commit ba4eca28468f · 2023-09-29T23:16:22.000-04:00
diff --git a/doc/api/next_api_changes/removals/26965-ER.rst b/doc/api/next_api_changes/removals/26965-ER.rst
@@ -0,0 +1,20 @@
+``matplotlib.cm.register_cmap``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+... was removed as it was deprecated during 3.7. Use `matplotlib.colormaps.register` instead.
+
+``matplotlib.cm.unregister_cmap``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+... was removed as it was deprecated during 3.7. Use `matplotlib.colormaps.unregister` instead.
+
+``matplotlib.pyplot.register_cmap``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+... was removed as it was deprecated during 3.7. Use `matplotlib.colormaps.register` instead.
+
+``matplotlib.cm.get_cmap``
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
+... was removed as it was deprecated during 3.7. Use `matplotlib.cm.ColormapRegistry.get_cmap` if you have a string, `None` 
+or a `matplotlib.colors.Colormap` object that you wnat to convert to a `matplotlib.colors.Colormap` instance.
