You can disable Link Whisper’s default font by using a filter called “wpil_disable_fonts”. Just hook a function to the filter and return true to disable the fonts.

You can copy this snippet into your theme’s functions.php file to disable the fonts:

/**
 * This snippet will disable the Link Whisper fonts in the WP Admin area.
 **/
add_filter('wpil_disable_fonts', 'disable_link_whisper_fonts');
function disable_link_whisper_fonts($disable){
    return true;
}