Remove TestUtils export

https://coveord.atlassian.net/browse/KIT-2425

packages/headless/src/index.ts

@@ -1,17 +1,6 @@
 import {polyfillCryptoNode} from './api/analytics/analytics-crypto-polyfill';
-import {buildMockSearchEngine} from './test/mock-engine-v2';
-import {buildMockRaw} from './test/mock-raw';
-import {buildMockResult} from './test/mock-result';
-import {createMockState} from './test/mock-state';
 import * as HighlightUtils from './utils/highlight';
 
-const TestUtils = {
-  buildMockRaw,
-  buildMockSearchEngine,
-  buildMockResult,
-  createMockState,
-};
-
 polyfillCryptoNode();
 
 // 3rd Party Libraries
@@ -562,7 +551,7 @@ export * from './features/actions-history/ipx-actions-history-actions-loader';
 
 // Types & Helpers
 export {API_DATE_FORMAT} from './api/search/date/date-format';
-export {TestUtils, HighlightUtils};
+export {HighlightUtils};
 export type {Result} from './api/search/search/result';
 export type {FieldDescription} from './api/search/fields/fields-response';
 export type {Raw} from './api/search/search/raw';