Follow the post of aloukat to remove it from your iPhone, if it doesn't go away then factory reset it like you were thinking to do.I'm having the same problem over here... I don't think i've downloaded it from cydia.. If there is no way to remove it i think restoring and re-jailbreaking the iDevice is the best sulotion..
I have this under my settings with all of the apps I downloaded from cydia. I know it's for Bluetooth but I never downloaded it. And a message pops up when I turn my phone on saying this is not optimiZed for this iPhone and says I may experience signal decrease. Is there a way I could delete this through Ifile because it isn't in cydia does anyone know what I could do?