Deleting a Database User
This article describes how to permanently delete a MySQL user. Users cannot be deleted if they are currently assigned to any databases. To delete the user from any databases, follow the steps in the section on deleting a user from a database.
Step by Step
Follow these steps to delete a MySQL user:
Click "All MySQL servers", then click the server that has the user that you wish to delete.
Click "All users"
Click the red cross at the end of the line of the user you wish to delete. See Figure 1.
Click the "Delete user" button.