There should be a possibility to delete a single element of custom labels for the `mod-kb-ebsco-java` module.
method with empty `displayLabel` property. Please see the description for this method by following link RM API documentation
To support removal of single custom label element we need to modify ModuleDescriptor with additional endpoint
update the corresponding raml file and provide an implementation.
`folio-holdingsiq-client` module already contains methods to communicate with RM API custom labels
Implementation of custom labels backend in mod-kb-ebsco(Ruby) - https://github.com/folio-org/mod-kb-ebsco/pull/86
Unit and API tests