Cancel after delete not working by Admin in coursetable.php

[PurviGoyal7]

Describe the bug
When admin clicks on edit and delete a student and then click on cancel, that student will be deleted.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'edit_admin' page
2. Delete any student
3. Click on 'Cancel'
4. The student will be deleted

Expected behavior
The student should not be deleted after clicking the cancel button.

Screenshots
Before deletion:

After deletion:

After clicking on the cancel button: