[OJS 2.4.8.1] How to remove double DOI on Table of Contents

Hi!
I need to remove the second doi appeared in our journal. Anyone can help.
We use OJS 2.4.8.1
Regards
http://journal.uin-alauddin.ac.id/index.php/khizanah-al-hikmah/index

Out of the box, OJS 2.x doesn’t provide the Article DOI on the Table of Contents.

You may be using a plugin and or a code modification to display these.

Both are discussed here:

Once you identify what is adding the DOIs to this page, you can disable or undo the unwanted display.

Thank you so much Clinton