Drop pixels.log support
It's possible to generate the same data via the database (as seen in [sc07/canvas-timelapse](https://git.sc07.company/sc07/canvas-timelapse)), it's just a duplicated area for pixels (in the log file)
Pixels are never actually deleted from the database table either, just marked with `deletedAt` when they were undone and pixels on the top of the canvas are tagged with `isTop`
issue