Revert "refactor: add license header to JS files & format files (#12035)"

This reverts commit 8310c91823.

tools/code.angularjs.org/add-license-to-rx.js

@@ -1,11 +1,4 @@
 #! /usr/bin/env node
-/**
- * @license
- * Copyright Google Inc. All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
 
 /**
  * TODO: remove this file when license is included in RxJS bundles.
@@ -24,19 +17,22 @@ ${license}
 **/
 `;
 
-var bundles =
-    fs.readdirSync(args['build-path'])
-        // Match files that begin with Rx and end with js
-        .filter(bundle => /^Rx\.?.*\.js$/.test(bundle))
-        // Load file contents
-        .map(bundle => {
-          return {
-            path: bundle,
-            contents: fs.readFileSync(`${args['build-path']}/${bundle}`).toString()
-          };
-        })
-        // Concatenate license to bundle
-        .map(bundle => { return {path: bundle.path, contents: `${license}${bundle.contents}`}; })
-        // Write file to disk
-        .forEach(
-            bundle => fs.writeFileSync(`${args['build-path']}/${bundle.path}`, bundle.contents));
+var bundles = fs.readdirSync(args['build-path'])
+  // Match files that begin with Rx and end with js
+  .filter(bundle => /^Rx\.?.*\.js$/.test(bundle))
+  // Load file contents
+  .map(bundle => {
+    return {
+      path: bundle,
+      contents: fs.readFileSync(`${args['build-path']}/${bundle}`).toString()
+    };
+  })
+  // Concatenate license to bundle
+  .map(bundle => {
+    return {
+      path: bundle.path,
+      contents: `${license}${bundle.contents}`
+    };
+  })
+  // Write file to disk
+  .forEach(bundle => fs.writeFileSync(`${args['build-path']}/${bundle.path}`, bundle.contents));