[Theme Horse Support Team]

Hi Cucerescu,
Yes the file name is header-extension.php, You need to find that above code and remove the <a> tag from that image. There are two slider in interface pro. Featured post/ page image slider and Upload Image slider. First make confirm that which slider are you using. Go through line no 521 there you can find the slider image code and also line no 589 to 593

From there you may remove the <a> tag

Note: Before making changes in the code first create a child theme then only customize the code. So that while updating to new version your customized code will not be lost. Other wise if you update to new version each and every time you need to make same code customization.

Thank you!