Preload one single file

Hello,

within my HTMl source is some code I need to remove out.

Basically it is this code:

<link rel=”preload” href=”https://example.com/wp-content/themes/dt-the7/fonts/icomoon-the7-microwidgets-16×16/fonts/icomoon-the7-microwidgets-16×16.ttf?dqeoeo” as=”font” type=”font/ttf” crossorigin=”anonymous”>

I need to remove it, cause it refers to nowhere.

I know that I need to put some code into the functions.php.

can somebody please help me. Which code do I need to remove my <link>?