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

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