chore: remove unnecessary hooks api

packages/runtime-core/src/experimental/hooks.ts

@@ -1,6 +1,5 @@
-import { ComponentInstance, FunctionalComponent, Component } from '../component'
-import { mergeLifecycleHooks, Data, WatchOptions } from '../componentOptions'
-import { VNode, Slots } from '../vdom'
+import { ComponentInstance } from '../component'
+import { mergeLifecycleHooks, WatchOptions } from '../componentOptions'
 import { observable, computed } from '@vue/observer'
 import { setupWatcher } from '../componentWatch'
 
@@ -200,15 +199,3 @@ export function useComputed<T>(getter: () => T): T {
   }
   return handles[id]()
 }
-
-export function withHooks(render: FunctionalComponent): new () => Component {
-  return class ComponentWithHooks extends Component {
-    static displayName = render.name
-    render(props: Data, slots: Slots, attrs: Data, parentVNode: VNode) {
-      setCurrentInstance((this as any)._self)
-      const ret = render(props, slots, attrs, parentVNode)
-      unsetCurrentInstance()
-      return ret
-    }
-  }
-}

packages/runtime-core/src/index.ts

@@ -22,7 +22,6 @@ export { memoize } from './optional/memoize'
 
 // Experimental APIs
 export {
-  withHooks,
   useState,
   useEffect,
   useRef,