internalPropNames isn't necessary, so remove it

Perhaps we'll bring it back as a future perf optimization if that
appears useful.

src/core/ReactComponent.js

@@ -35,13 +35,6 @@ var merge = require('merge');
  */
 var OWNER = '{owner}';
 
-/**
- * Internal properties that shouldn't be considered when modifying node
- * attributes.
- */
-var internalPropNames = {children: true};
-internalPropNames[OWNER] = true;
-
 /**
  * Every React component is in one of these life cycles.
  */
@@ -138,11 +131,6 @@ function appendNestedChildren(parentKey, sourceArray, targetArray) {
  */
 var ReactComponent = {
 
-  /**
-   * @internal
-   */
-  internalPropNames: internalPropNames,
-
   /**
    * @param {?object} object
    * @return {boolean} True if `object` is a valid component.

src/core/ReactNativeComponent.js

@@ -32,8 +32,6 @@ var keyOf = require('keyOf');
 var merge = require('merge');
 var mixInto = require('mixInto');
 
-var internalPropNames = ReactComponent.internalPropNames;
-
 var putListener = ReactEventEmitter.putListener;
 var deleteListener = ReactEventEmitter.deleteListener;
 var registrationNames = ReactEventEmitter.registrationNames;
@@ -236,7 +234,6 @@ ReactNativeComponent.Mixin = {
           this._rootNodeID,
           ''
         );
-      } else if (internalPropNames[propKey]) {
       } else if (registrationNames[propKey]) {
         deleteListener(this._rootNodeID, propKey);
       } else {
@@ -291,7 +288,6 @@ ReactNativeComponent.Mixin = {
           this._rootNodeID,
           '' + nextProp
         );
-      } else if (internalPropNames[propKey]) {
       } else if (registrationNames[propKey]) {
         putListener(this._rootNodeID, propKey, nextProp);
       } else {