Ah I know what you mean, you cant reply to your own thread because you already did so to say “Thanks” and the Forum prevents you from double-posting. Also dont worry about making up new Topics. 
And for your Question, go in /config/Recipes/ and select the Config File corresponding to the Recipe you wanna remove.
Note, that if you have Autogenerated Recipes (like all the Making Plates into Curved Plates Recipes that are nearly identical apart from Material) you need to look at them in NEI once first (or just craft them) before you see the Config Entry for them after closing your Game. ^^