Clicking on the url bar shows following options:
Search with Google
Search with Amazon.co.uk
I would like to suggest above options being changeable from settings, or at least removable.
You should already be able to do this by following the instructions in the help article here:
Hope this helps! If not, let me know 😃
Your answer is applicable to Search engines that are listed, but not Hyperlinks which are also listed. The five options below two search engine options are hyperlinks. The five hyperlinks are shown after purging history.