From 470377bbdb1874eec247a082ce418b0d26c43af6 Mon Sep 17 00:00:00 2001
From: Dan Abramov <dan.abramov@gmail.com>
Date: Thu, 2 Aug 2018 02:33:52 +0100
Subject: [PATCH] Remove extraneous condition

It's covered by a check below.
---
 packages/react-dom/src/shared/ReactControlledValuePropTypes.js | 2 --
 1 file changed, 2 deletions(-)

diff --git a/packages/react-dom/src/shared/ReactControlledValuePropTypes.js b/packages/react-dom/src/shared/ReactControlledValuePropTypes.js
index 65e16ffbe2..ccf1cc6a88 100644
--- a/packages/react-dom/src/shared/ReactControlledValuePropTypes.js
+++ b/packages/react-dom/src/shared/ReactControlledValuePropTypes.js
@@ -30,7 +30,6 @@ if (__DEV__) {
   const propTypes = {
     value: function(props, propName, componentName) {
       if (
-        !(propName in props) ||
         hasReadOnlyValue[props.type] ||
         props.onChange ||
         props.readOnly ||
@@ -48,7 +47,6 @@ if (__DEV__) {
     },
     checked: function(props, propName, componentName) {
       if (
-        !(propName in props) ||
         props.onChange ||
         props.readOnly ||
         props.disabled ||