Earlier it was removed using style in userChrome.css file - " #PopupAutoCompleteRichResult richlistitem:first-of-type[actiontype="visiturl"] ", after update to 78.3 esr version this isn't working. I tried with deleted /home/.mozila folder (new profile) and with menu home ->top sites and search suggestions switched off (and also with and without userChrome.css file) so this is isn't the case. Thanks for help.