Login as an Admin user.
Go to Setup and type Installed packages in the Quick Find box.
Click Uninstall next to the package name. Please read the warning before uninstalling the package.
Select Yes at the bottom of the page.
Click Uninstall. You will receive an email to say the package was uninstalled successfully.
Uninstall failure
In the above case, remove all EDQ components from the above listed objects. Un-assign all EDQ package related permission sets from all users, in this case its LEDQ Non-Admin Permissions.
Go to object record.
Click Edit page.
Click the remove icon in the top right corner of the component.
Click Save.