You killed your setting.txt, you can't uninstall your system menu. If you have boot2 bootmii, you need to replace your setting.txt file. If you do not have boot2 bootmii, you can not fix it and must send it out to a nand programmer to have it fixed. Bad-Ad84 can fix it and you can PM him on this site, he is in England. Deadlyfoez can fix it, he is in the USA and can be mailed at deadlyfoez at yahoo dot com. Streamlinehd can fix it, he is in the USA and can be pm'd here.
If you have boot2 bootmii, let me know and I can walk you through the fix. Otherwise, put it in a box and send it out to be repaired.
One last thing, I actually have a guide to region change wiis, and your method does not work. Next time try to do some research first.