Tying to use this script: https://gist.github.com/The-Arcanian/4497ca4b092358562410eaa4445711b4

But the recipes are not removed.

Tested with:
Crafttweaker 4.0.10
AstralSorcery 1.8.2
Forge 14.23.0.2529

Have you reloaded the pack/server after making the changes? Does it report any errors into the log when loading up with that script in place?

Your fault for not reading the documentation of it properly:

// Parameters:
// OutputStack

I don't know of any recipe to remove that outputs 3 iron ore or 3 gold ore.

Ok, throwing blame around does not help anything, and comes across as uppity.

But I did make an oversight, so thank you.