Remove Node shallow builds (#18157)

This is just a forwarding module. We can hardcode it.

Author: sebmarkbage

packages/react-test-renderer/npm/shallow.js

@@ -1,7 +1,3 @@
 'use strict';
 
-if (process.env.NODE_ENV === 'production') {
-  module.exports = require('./cjs/react-test-renderer-shallow.production.min.js');
-} else {
-  module.exports = require('./cjs/react-test-renderer-shallow.development.js');
-}
+module.exports = require('react-shallow-renderer');

scripts/rollup/bundles.js

@@ -295,7 +295,7 @@ const bundles = [
       }),
   },
   {
-    bundleTypes: [NODE_DEV, NODE_PROD, UMD_DEV, UMD_PROD],
+    bundleTypes: [UMD_DEV, UMD_PROD],
     moduleType: NON_FIBER_RENDERER,
     entry: 'react-test-renderer/shallow',
     global: 'ReactShallowRenderer',