Added some new blocks, fixed collisions not being detected when standing on top of a full block

src/pocketmine/block/NetherBrick.php

@@ -28,20 +28,10 @@ use pocketmine\item\Tool;
 
 class NetherBrick extends Solid{
 
-	protected $id = self::NETHER_BRICK_BLOCK;
-
-	public function __construct(int $meta = 0){
-		$this->meta = $meta;
-	}
-
 	public function getToolType() : int{
 		return Tool::TYPE_PICKAXE;
 	}
 
-	public function getName() : string{
-		return "Nether Bricks";
-	}
-
 	public function getHardness() : float{
 		return 2;
 	}