for G Suite / for Office 365
Difference between deleting approver set up and disabling.
Disabling an approver : The user will not be able to access the temporary suspension screen itself.
Deleting an approver : The user will be recreated for both Single Sign On and Basic Authentication, so no need to pay attention to this.
*Never disable if "you want only to remove the user from approvers, but want to let him access the suspension screen as a general user".