Edit these recipe files with a software like Notepad++ and create your own mod with modified recipes. See Mod Portal - YouMod Recipe for tutorial.
I'm not too familiar with Lua. I assume you just modify the ingredients line to look like:
ingredients = {},
Exactly krlsmnk! Something like this
{ type = "recipe", name = "express-transport-belt-yellow", category = "crafting-with-fluid", energy_required = 0.01, enabled = false, ingredients ={}, result = "express-transport-belt-yellow" },
