Remove backend patch of react-devtools-core

Author: jhen0409

scripts/patch-modules.js

@@ -3,38 +3,13 @@ const path = require('path');
 
 console.log('Patch react-devtools-core');
 
-// backend vender is backward compatibility for RN <= 0.42
-// the problem related to https://github.com/facebook/react-devtools/pull/749
-// fixed in core v2.3 but have no patch in the backend vender
-const rdBackend = path.join(
-  __dirname,
-  '../dist/node_modules/react-devtools-core/vendor/backend-1.0.6.js'
-);
-shell.sed(
-  '-i',
-  'window.requestIdleCallback',
-  'window.__REQUEST_IDLE_CALLBACK_REPLACED_BY_PATCH__',
-  rdBackend
-);
-shell.sed(
-  '-i',
-  'window.cancelIdleCallback',
-  'window.__CANCEL_IDLE_CALLBACK_REPLACED_BY_PATCH__',
-  rdBackend
-);
-
 const rdStandalone = path.join(
   __dirname,
   '../dist/node_modules/react-devtools-core/build/standalone.js'
 );
 // Hide source map of react-devtools-core
 // for optimize chrome devtools
-shell.sed(
-  '-i',
-  '//# sourceMappingURL=standalone.js.map',
-  '',
-  rdStandalone
-);
+shell.sed('-i', '//# sourceMappingURL=standalone.js.map', '', rdStandalone);
 // Avoid logging from react-devtools-core
 // log: connected, disconnected
 // error: listening error (can be seen directly in the panel)