Reprocessor Crafting is NOT a type of IRecipeManager and normal removal methods will not work for it.
You may want to import the class so you don't need to use the full package name everywhere, to do this simply add the following to the top of your script:
Now you can reference the class like so:
ReprocessorCrafting.addRecipe("reprocessor_test", <item:minecraft:diamond>, <item:minecraft:apple>);
The following script will add a recipe that will output a Diamond when an Apple is Reprocessed.
// mods.mysticalagriculture.ReprocessorCrafting.addRecipe(id as string, output as IItemStack, input as IIngredient); mods.mysticalagriculture.ReprocessorCrafting.addRecipe("reprocessor_test", <item:minecraft:diamond>, <item:minecraft:apple>);