Remove core-extensions-api

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

src/extensions/core-extension-api.ts

@@ -1,21 +0,0 @@
-// Lens-extensions api developer's kit
-export type { LensExtensionRuntimeEnv } from "./lens-runtime";
-export * from "./lens-main-extension"
-export * from "./lens-renderer-extension"
-
-// APIs
-import * as EventBus from "./core-api/event-bus"
-import * as Store from "./core-api/stores"
-import * as Util from "./core-api/utils"
-import * as App from "./core-api/app"
-import * as Registry from "./core-api/registries"
-import * as ClusterFeature from "./core-api/cluster-feature"
-
-export {
-  App,
-  ClusterFeature,
-  EventBus,
-  Registry,
-  Store,
-  Util
-}