Remove renderPhaseUpdates Map

Follow up to facebook#17484, which was reverted due to a bug found in www.

Author: acdlite

packages/react-reconciler/src/ReactFiberBeginWork.js

@@ -135,7 +135,7 @@ import {
   calculateChangedBits,
   scheduleWorkOnParentPath,
 } from './ReactFiberNewContext';
-import {resetHooks, renderWithHooks, bailoutHooks} from './ReactFiberHooks';
+import {renderWithHooks, bailoutHooks} from './ReactFiberHooks';
 import {stopProfilerTimerIfRunning} from './ReactProfilerTimer';
 import {
   getMaskedContext,
@@ -1318,7 +1318,8 @@ function mountIndeterminateComponent(
     workInProgress.tag = ClassComponent;
 
     // Throw out any hooks that were used.
-    resetHooks();
+    workInProgress.memoizedState = null;
+    workInProgress.updateQueue = null;
 
     // Push context providers early to prevent context stack mismatches.
     // During mounting we don't know the child context yet as the instance doesn't exist.