Can NOT remove delivery method from interface

Overview: Once a delivery method has been selected it seem the system treats it as a required field. The user should be able to remove it.

Steps to Reproduce:

1. Log into some FOLIO environment as User X
2. Click organizations app
3. Select an organization
4. Click edit organization
5. Click add interface
6. Click "New" interface
7. Input a name
8. select a delivery method
9. Save interface
10. Edit that interface
11. Remove delivery method
12. Click save

Expected Results: Interface is saved with NO delivery method

Actual Results: Error message appears "The interface was not saved" with no explanation. Interface details are not updated

Additional Information: see video

URL: https://bugfest-goldenrod.folio.ebsco.com/organizations/cb4b0640-98da-4512-a1d8-1b7fd7ac6d24/interface/e416e06d-bcdf-412c-b2b7-dbfcbe74c95b/view

Interested parties: jmulvaney