How to remove the default testimonials page

The site is showing a testimonials page which is not editable, and I cannot even change the template or anything. Can you please help me out with this. It is just showing Testimonials archive. TIA
http://dev.makemyassignments.com/testimonials/

Hello @tomter,

Please check this topic:

Please feel free to ask any other questions that you might have.

Kind Regards, Roman.