ok so i still can't find anything by searching for SIMBL or SafariOmniBar, but i still have an omnibar in safari. the other day when i turned my computer on and opened safari it was back to how i want it and i thought it would stay that way. after quitting and restarting safari, it was back
You need to go to your hard drive (Disk, Macintosh HD etc.) in there are 4 folders. Go in the Library folder, then application support, then SIMBL. Then plugins and delete the SafariOmnibar.bundle file. This should work