Strip all remaining legacy item ID/meta stuff from blocks

the doors are now finally open, we can:
- make all the wood types dynamic
- fix glazed terracotta
- add all the new blocks

LET'S GOOOOOOOOOOOO

src/block/Coral.php

@@ -23,7 +23,6 @@ declare(strict_types=1);
 
 namespace pocketmine\block;
 
-use pocketmine\data\bedrock\CoralTypeIdMap;
 use pocketmine\item\Item;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
@@ -32,10 +31,6 @@ use pocketmine\world\BlockTransaction;
 
 final class Coral extends BaseCoral{
 
-	protected function writeStateToItemMeta() : int{
-		return CoralTypeIdMap::getInstance()->toId($this->coralType);
-	}
-
 	public function readStateFromWorld() : void{
 		//TODO: this hack ensures correct state of coral plants, because they don't retain their dead flag in metadata
 		$world = $this->position->getWorld();