Keep some Wall Stamps (Straight, Transition, Pillar)

The original idea was to remove all Wall Stamps.

Since Wall Stamps can be useful, some should be kept additionally:

• Small Straight piece

• Long Straight piece

• Transition piece

• Square 'Pillar' piece

(Keep in mind, adding wall stamps are annoying to add for the artists and take time away for other stamp, so as a middle ground we only add a few important pieces.