To remove a certification from a candidate, click on Candidates in the left navigation menu. On the Candidates page, locate the candidate for whom you wish to remove the certification and click on the name of the individual.
By default, the Skills tab is selected. Click on the Certifications tab and locate the certification you wish to remove. Click the orange wrench icon in the Edit column. (Be careful to click on the orange wrench icon associated with the candidate's certification and not the same icon for the candidate's profile.) Next, click on the red wastebasket icon.
There will be no confirmation to delete the certification but you will have a moment to undo the deletion.
Note: A certification for a candidate can also be removed on the Candidates tab on the details page for the certification.