Rename "Polished Blackstone Bricks" to "Blackstone Bricks"

Chiseled Polished Blackstone, Polished Blackstone Bricks, Cracked Polished Blackstone Bricks, Polished Blackstone Brick Stairs, Polished Blackstone Brick Slabs, Polished Blackstone Brick Walls, and Polished Blackstone Buttons should all have the “Polished” removed from their names, seeing as all other stone block sets which are crafted in the same way, using their polished variants, do not retain the “Polished” in their names.