Remove Magnifying Glass

I want to remove the looking glass icon in the menu-bar. Does anybody know how I can fix that?

Adding formaly working custom CSS is not working anymore (as seen in this topic on the Customizr-page https://presscustomizr.com/snippet/removing-page-icon-left-page-title/). Probalbly because of the new version.

ANybody find out how it works with Customizr version 4.4.18.
Thanks al lot!