diff --git a/x-pack/legacy/plugins/siem/public/apps/context/kibana_core.tsx b/x-pack/legacy/plugins/siem/public/apps/context/kibana_core.tsx
deleted file mode 100644
index 778e138c5fa6c05..000000000000000
--- a/x-pack/legacy/plugins/siem/public/apps/context/kibana_core.tsx
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License;
- * you may not use this file except in compliance with the Elastic License.
- */
-
-import React, { createContext, useContext } from 'react';
-import { InternalCoreStart } from '../../../../../../src/core/public';
-
-interface AppMountContext {
-  core: InternalCoreStart;
-}
-
-// TODO: Replace CoreStart/CoreSetup with AppMountContext
-// see: https://github.com/elastic/kibana/pull/41007
-
-export const KibanaCoreContext = createContext({} as AppMountContext['core']);
-
-export const KibanaCoreContextProvider: React.FC<{ core: AppMountContext['core'] }> = props => (
-  <KibanaCoreContext.Provider {...props} value={props.core} children={props.children} />
-);
-
-export function useKibanaCore() {
-  return useContext(KibanaCoreContext);
-}