diff --git a/packages/smart-forms-renderer/src/utils/answerExpression.ts b/packages/smart-forms-renderer/src/utils/answerExpression.ts
index a948f103..1736cd04 100644
--- a/packages/smart-forms-renderer/src/utils/answerExpression.ts
+++ b/packages/smart-forms-renderer/src/utils/answerExpression.ts
@@ -15,28 +15,10 @@
  * limitations under the License.
  */
 
-/*
- * Copyright 2024 Commonwealth Scientific and Industrial Research
- * Organisation (CSIRO) ABN 41 687 119 230.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 import { AnswerExpression } from '../interfaces/answerExpression.interface';
 import fhirpath from 'fhirpath';
 import fhirpath_r4_model from 'fhirpath/fhir-context/r4';
 import _isEqual from 'lodash/isEqual';
-import { LookupResponse } from '@aehrc/sdc-populate/lib/SDCPopulateQuestionnaireOperation/api/lookupCodeSystem';
 
 export function evaluateAnswerExpressions(
   fhirPathContext: Record<string, any>,
@@ -89,13 +71,3 @@ export function evaluateAnswerExpressions(
     updatedAnswerExpressions: updatedAnswerExpressions
   };
 }
-
-export function answerExpressionOptionsIsValid(response: any): response is LookupResponse {
-  return (
-    response &&
-    response.resourceType === 'Parameters' &&
-    response.parameter &&
-    response.parameter.find((p: any) => p.name === 'display') &&
-    response.parameter.find((p: any) => p.name === 'display').valueString
-  );
-}