fixed delete reference error message
fixed delete reference error message

SingingTree/hapi-fhir,jamesagnew/hapi-fhir,jamesagnew/hapi-fhir,aemay2/hapi-fhir,jamesagnew/hapi-fhir,SingingTree/hapi-fhir,SingingTree/hapi-fhir,SingingTree/hapi-fhir,aemay2/hapi-fhir,jamesagnew/hapi-fhir,jamesagnew/hapi-fhir,SingingTree/hapi-fhir,aemay2/hapi-fhir,aemay2/hapi-fhir,aemay2/hapi-fhir,jamesagnew/hapi-fhir,aemay2/hapi-fhir,SingingTree/hapi-fhir