Merge pull request matplotlib#28674 from meeseeksmachine/auto-backport-of-pr-28650-on-v3.9.x

Backport PR matplotlib#28650 on branch v3.9.x (remove out of date todos on animation.py)

Author: timhoffm

lib/matplotlib/animation.py

@@ -1,23 +1,3 @@
-# TODO:
-# * Documentation -- this will need a new section of the User's Guide.
-#      Both for Animations and just timers.
-#   - Also need to update
-#     https://scipy-cookbook.readthedocs.io/items/Matplotlib_Animations.html
-# * Blit
-#   * Currently broken with Qt4 for widgets that don't start on screen
-#   * Still a few edge cases that aren't working correctly
-#   * Can this integrate better with existing matplotlib animation artist flag?
-#     - If animated removes from default draw(), perhaps we could use this to
-#       simplify initial draw.
-# * Example
-#   * Frameless animation - pure procedural with no loop
-#   * Need example that uses something like inotify or subprocess
-#   * Complex syncing examples
-# * Movies
-#   * Can blit be enabled for movies?
-# * Need to consider event sources to allow clicking through multiple figures
-
-
 import abc
 import base64
 import contextlib