message: remove unbilled
diff: @@ -115,8 +115,7 @@ export enum BillingInvoiceStatus {
  DRAFT = 'draft',
  VOID = 'void',
  UNCOLLECTIBLE = 'uncollectible',
  - DELETED = 'deleted',
  - NOT_BILLED = 'unbilled',
  + DELETED = 'deleted'
  }
  export interface BillingOperationResult {
  