Remove magnifiying glass search icon from mobile menu

Hi

Great plugin and working perfectly except… I am unable to remove the search icon from the mobile (burger) menu. I am using the search box (drop down) on the main navigational menu and a short code for mobile use. The problem is I cannot remove the icon from the mobile menu which I couldn’t get to work and don’t want. Gone through the forums the following doesn’t work, which seems the common suggestion.

@media only screen and (max-width: 767px) {
#menu-item-search {
display: none;
}
}

Everything else is working perfectly. Using the Enfold theme. Perhaps a theme problem, but Ivory, puts the icon in the menu when it is enabled. Disable Ivory, and it goes.

Thank you for your support.