import mods.jei.JEI;
import mods.jei.component.JeiIngredient;
import crafttweaker.api.loot.modifier.LootModifierManager;
import crafttweaker.api.loot.condition.LootConditions;
import crafttweaker.api.loot.modifier.CommonLootModifiers;


//Remove Ropes not from Farmer's Delight.
loot.modifiers.register(
    "no_longfall_boots",
    LootConditions.none(),
    CommonLootModifiers.remove(<item:grapplemod:longfallboots>)
);
loot.modifiers.register(
    "no_repeller",
    LootConditions.none(),
    CommonLootModifiers.remove(<item:grapplemod:repeller>)
);

//Finally, hide the items in JEI
JEI.hideIngredient(<item:grapplemod:longfallboots> as JeiIngredient) as void;
JEI.hideIngredient(<item:grapplemod:repeller> as JeiIngredient) as void;