MDM: remove duplicate error type

connect/mdm/errors.go

@@ -8,15 +8,6 @@ var (
 	ErrNotFound                       = errors.New("entity not found")
 	ErrBaseURLCannotBeEmpty           = errors.New("base URL cannot be empty")
 	ErrEmptyResult                    = errors.New("empty result")
-	ErrInvalidEndpointURL             = errors.New("invalid endpoint URL")
-	ErrMissingName                    = errors.New("missing name value")
-	ErrMissingDescription             = errors.New("missing description value")
-	ErrMalformedInputValue            = errors.New("malformed input value")
-	ErrMissingOrganization            = errors.New("missing organization")
-	ErrMissingProposition             = errors.New("missing proposition")
-	ErrMissingGlobalReference         = errors.New("missing global reference")
-	ErrNotImplementedByHSDP           = errors.New("method not implemented by HSDP")
-	ErrEmptyResults                   = errors.New("empty results")
 	ErrOperationFailed                = errors.New("operation failed")
 	ErrCouldNoReadResourceAfterCreate = errors.New("could not read resource after create")
 )

connect/mdm/propositions_service.go

@@ -66,7 +66,7 @@ func (p *PropositionsService) GetProposition(opt *GetPropositionsOptions, option
 		return nil, resp, err
 	}
 	if len(*props) == 0 {
-		return nil, resp, fmt.Errorf("GetProposition: %w", ErrEmptyResults)
+		return nil, resp, fmt.Errorf("GetProposition: %w", ErrEmptyResult)
 	}
 	return &(*props)[0], resp, nil
 }