Revert commits related to wallpaper cropping

bug: 28763785
related-to: 27989717
related-to: 28887408

Revert "Fix wallpaper crop during unlock animation"

This reverts commit 616c7c10.

Revert "Fix wallpaper cropped too soon when unminimizing dock"

This reverts commit f0b76b07.

Revert "Set final crop on wallpaper instead of intersect clip with stack bounds"

This reverts commit dcf0183c.

Revert "Crop wallpaper windows to their current target stack bounds"

This reverts commit e6cb450b.