I want to change the behavior of the farmland block. So I've made a simple block, that extends it.
Bevore 1.7 I've used
Block.blocksList[FarmlandBlockID] = null;
Block newfarmland = (new BlockFarmlandNew(FarmlandBlockID)).setUnlocalizedName("farmland").setTextureName("farmland");
GameRegistry.registerBlock(newfarmland, "farmland");
but blocksList was removed, does anybody know another way to remove an registred block?