Remove outdated comments.

fixed by facebook#20894

Author: zhangenming

packages/react-reconciler/src/ReactFiberReconciler.js

@@ -161,7 +161,6 @@ export const createComponentSelector = enableNewReconciler
   ? createComponentSelector_new
   : createComponentSelector_old;
 
-//TODO: "psuedo" is spelled "pseudo"
 export const createHasPseudoClassSelector = enableNewReconciler
   ? createHasPseudoClassSelector_new
   : createHasPseudoClassSelector_old;