#1577: fixed linting error

Author: sharonyang16

src/frontend/src/pages/FinancePage/ReimbursementRequestDetailPage/ReimbursementRequestDetailsView.tsx

@@ -32,7 +32,6 @@ import {
 import {
   imageDownloadUrl,
   imageFileUrl,
-  imagePreviewUrl,
   isReimbursementRequestAdvisorApproved,
   isReimbursementRequestSaboSubmitted
 } from '../../../utils/reimbursement-request.utils';