Delta Search is one of the options, as is Bing, Yahoo! search, Chrome etc. some of which I didn't even know existed, and certainly didn't ask for ! Chrome is selected as the default and I am unable to delete and wipe off Delta Search.
- is 'search' listed as a search engine? Is 'Chrome' listed as one too? I am not familiar with either. Can you not select 'edit search engines' in the address bar? I would suggest ( for next time?) that you remove ALL except the one you want.