CCM-9692: fix unused import

Author: alexnuttall

lambdas/backend-api/src/templates/infra/template-repository.ts

@@ -23,7 +23,6 @@ import {
 } from '@aws-sdk/lib-dynamodb';
 import { ApplicationResult, failure, success, calculateTTL } from '../../utils';
 import { DatabaseTemplate } from './template';
-import { unmarshall } from '@aws-sdk/util-dynamodb';
 
 type WithAttachments<T> = T extends { templateType: 'LETTER' }
   ? T & { files: LetterFiles }