Lots of cleanups

[Starbuck5]

I was looking at some of the files in /examples/data, and I thought it would be pretty easy to decrease the size of pygame wheels / installations with minimal effort

• Reencoded turquoise.tiff to actually be compressed
• Reencoded fist.bmp, chimp.bmp to pngs for filesize (Had to change references to these files in the tests, other examples, and even the tutorial for the chimp example)
• Removed yuv_1.pgm, which was only used by the overlay example, so I removed that too (it's deprecated, no need to keep the example there)
• Removed oldplayer.gif, which wasn't being used

This made me realize the mask example was broken by the size of "fist.bmp" being much bigger than it was in the past, so I told it to use chimp.png instead.

I also:

• Changed the surface size error message because (w, h) don't need to be ints
• Removed the overlay test (deprecated, and it was a placeholder test anyway)
• Removed an old pygame.movie dummy backend file that was hanging around
• Committed an automatic setup.py docs .h file change from the joysticks example existing

I didn't mean to touch so many files, but I think this is a straightforward cleanup of some loose ends. It also reduces the size of a pygame installation by a little more than a megabyte. 13.4 mb -> 12.2 mb on my system.

[ankith26]

LGTM! 👍 🥳

[illume]

👍 Nice cleanups. Thanks.