Uninstalling GalactiCraft?

My original goal was to play the Yogscast Complete Pack, but my computer can't seem to run it so I resorted to installing half of the mods on the mod pack. I wanted to download OpenBlocks, but now that I have I can only play the game on ONE FRAME A SECOND. After having a look in my mods folder, I saw that GalactiCraft was taking up a whopping 10,000KB whilst the second biggest mod only took up 5,000KB. I've removed the.jar files from my mods folder, but everytime try to run minecraft, it informs me that I don't have GalactiCraft installed and urges me to reinstall it, and when I ignore it minecraft just stops responding? Is anyone else having this trouble, or am I just doing something wrong?

Added (1). I realised that I hadn't removed the Micdoodle Core mod, but after removing that I'm still having problems with loading?

On the ATlauncher select edit mods and un-tick them. Deleting them doesn't quite do it as the mod pack still think it exists but it doesn't.