Reverting the Drop API for now, we need to re-evalute this as it is causing too many issues and blocking releases.

This reverts commits:
- d2d03afc8854394aeefb40ea5ebf224c8032b19f
- 6245746e91123dd8ef70e5f15b7cdfc7e36d8e8c
- 41fae5c613e9e69a8f6bdf33b23bb09d7f407433
- c34bdecab42cf4098054a5ea43e1c2958d44ae92
- d7445084ac9a90fa0b66d8b050b8d0d2a062eaf3
- 6a6ed2e6ae2328a8a791bcc6857c44dc6c6a7030
- a783bc4dc95da8e26c673abe48fad96b550aba28
- cb50fd68766df8e07631ba5be85759f8257e8068
- 34dfff2ad5c407c712b2783f02960aac5e8649f2
- f33b513820de987b49a4338e85df80968217a601
- 5fd9fdfde055e6eb6a83db246d009b69377b7c94
- 2795b116f40d06551fbb7b96d1963c0ddbeac384

By: Warren Loo <evilseph@gmail.com>

paper-server/src/main/java/org/bukkit/craftbukkit/CraftWorld.java

@@ -1056,7 +1056,6 @@ public class CraftWorld implements World {
         int blockZ = block.getZ();
         // following code is lifted from Explosion.a(boolean), and modified
         net.minecraft.server.Block.byId[blockId].dropNaturally(this.world, blockX, blockY, blockZ, block.getData(), yield, 0);
-        net.minecraft.server.Block.byId[blockId].doActualDrop(this.world, blockX, blockY, blockZ);
         block.setType(org.bukkit.Material.AIR);
         // not sure what this does, seems to have something to do with the 'base' material of a block.
         // For example, WOODEN_STAIRS does something with WOOD in this method

paper-server/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java

@@ -18,7 +18,6 @@ import org.bukkit.block.BlockFace;
 import org.bukkit.block.BlockState;
 import org.bukkit.block.PistonMoveReaction;
 import org.bukkit.craftbukkit.CraftChunk;
-import org.bukkit.craftbukkit.inventory.CraftItemStack;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.metadata.MetadataValue;
 import org.bukkit.plugin.Plugin;
@@ -348,7 +347,7 @@ public class CraftBlock implements Block {
 
         setTypeId(Material.AIR.getId());
         if (block != null) {
-            block.b(chunk.getHandle().world, x, y, z, data, 0);
+            block.dropNaturally(chunk.getHandle().world, x, y, z, data, 1.0F, 0);
             return true;
         }
         return false;

paper-server/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java

@@ -20,7 +20,6 @@ import net.minecraft.server.InventoryCrafting;
 import net.minecraft.server.Item;
 import net.minecraft.server.ItemStack;
 import net.minecraft.server.Packet101CloseWindow;
-import net.minecraft.server.Packet53BlockChange;
 import net.minecraft.server.World;
 import net.minecraft.server.WorldServer;
 
@@ -511,49 +510,4 @@ public class CraftEventFactory {
         Bukkit.getPluginManager().callEvent(event);
         return event;
     }
-
-    private static final List<org.bukkit.inventory.ItemStack> drops = new java.util.ArrayList<org.bukkit.inventory.ItemStack>();
-
-    public static boolean callBlockBreakEvent(World world, int x, int y, int z, int id, int data, boolean creative, EntityHuman player) {
-        net.minecraft.server.Block blockType = net.minecraft.server.Block.byId[id];
-        if (blockType == null) { // Illegal block ID
-            return true;
-        }
-
-        // Tell client the block is gone immediately then process events
-        if (world.getTileEntity(x, y, z) == null) {
-            Packet53BlockChange packet = new Packet53BlockChange(x, y, z, world);
-
-            packet.material = 0;
-            packet.data = 0;
-            ((EntityPlayer) player).netServerHandler.sendPacket(packet);
-        }
-
-        Block block = world.getWorld().getBlockAt(x, y, z);
-        List<ItemStack> toDrop = blockType.calculateDrops(world, player, x, y, z, data);
-        drops.clear();
-
-        if (!creative && player.b(blockType)) {
-            for (ItemStack stack : toDrop) {
-                drops.add(new CraftItemStack(stack));
-            }
-        }
-
-        BlockBreakEvent event = new BlockBreakEvent(block, (org.bukkit.entity.Player) player.getBukkitEntity(), drops);
-        world.getServer().getPluginManager().callEvent(event);
-
-        if (event.isCancelled()) {
-            toDrop.clear();
-            // Let the client know the block still exists
-            ((EntityPlayer) player).netServerHandler.sendPacket(new Packet53BlockChange(x, y, z, world));
-            return true;
-        }
-
-        toDrop.clear();
-        for (org.bukkit.inventory.ItemStack stack : drops) {
-            toDrop.add(CraftItemStack.createNMSItemStack(stack));
-        }
-
-        return false; // Event not cancelled
-    }
 }