diff --git a/packages/core/src/extensions/as-legacy-globals-for-extension-api/as-legacy-global-singleton-object-for-extension-api.ts b/packages/core/src/extensions/as-legacy-globals-for-extension-api/as-legacy-global-singleton-object-for-extension-api.ts
deleted file mode 100644
index 111a66751e..0000000000
--- a/packages/core/src/extensions/as-legacy-globals-for-extension-api/as-legacy-global-singleton-object-for-extension-api.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-/**
- * Copyright (c) OpenLens Authors. All rights reserved.
- * Licensed under MIT License. See LICENSE in root directory for more information.
- */
-import type { Injectable } from "@ogre-tools/injectable";
-import { asLegacyGlobalForExtensionApi, getLegacyGlobalDiForExtensionApi } from "@k8slens/legacy-global-di";
-import { loggerInjectionToken } from "@k8slens/logger";
-
-export interface LegacySingleton<T> {
-  createInstance(): T;
-  getInstance(): T;
-  resetInstance(): void;
-}
-
-export function asLegacyGlobalSingletonForExtensionApi<Instance>(injectable: Injectable<Instance, unknown, void>): LegacySingleton<Instance>;
-export function asLegacyGlobalSingletonForExtensionApi<Instance, InstantiationParameter>(injectable: Injectable<Instance, unknown, InstantiationParameter>, param: InstantiationParameter): LegacySingleton<Instance>;
-
-export function asLegacyGlobalSingletonForExtensionApi<Instance, InstantiationParameter>(
-  injectable: Injectable<Instance, unknown, InstantiationParameter>,
-  instantiationParameter?: InstantiationParameter,
-): LegacySingleton<Instance> {
-  const instance = asLegacyGlobalForExtensionApi(
-    injectable as never,
-    instantiationParameter,
-  ) as Instance;
-
-  return {
-    createInstance: () => instance,
-
-    getInstance: () => instance,
-
-    resetInstance: () => {
-      const di = getLegacyGlobalDiForExtensionApi();
-      const logger = di.inject(loggerInjectionToken);
-
-      logger.warn(
-        `resetInstance() for a legacy global singleton of "${injectable.id}" does nothing.`,
-      );
-    },
-  };
-}