Removed features/Craexxeus Tower

The Craexxeus Tower is a colossal Boss Structure from the Shyrelands. It is where the boss Craexxeus is fought.

Generation
The Craexxeus Tower has a 1 in 600 chance to generate in a chunk in the Shyrelands. It will always generate on the four corners of a chunk. It will also always generate on y = 31.

Structure
The Craexxeus Tower generates as a tower with a big room on top. The tower portion and most of the floor is composed of Shyre Bricks. Inside the tower part is a staircase leading to the top (the player may have to remove some blocks to get to the top). The top of the tower contains a large room with walls of Shyre Glass

At the center of the large room is a Craexxeus Altar. The player can use an Ancient Ring on it to spawn Craexxeus.