Fix license header for the javascript files

Author: AWS-LanDing

python/example_code/cognito/scenarios/identity_pools_example_demo/web/frontend/js/animations.js

@@ -1,7 +1,5 @@
-/*
- * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
- * SPDX-License-Identifier: Apache-2.0
- */
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
 
 // Global animation handler for the entire website
 (function() {

python/example_code/cognito/scenarios/identity_pools_example_demo/web/frontend/js/auth-core.js

@@ -1,5 +1,4 @@
 /*
- * AUTH-CORE.JS - Configuration & OAuth Authentication
  * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
  * SPDX-License-Identifier: Apache-2.0
  */

python/example_code/cognito/scenarios/identity_pools_example_demo/web/frontend/js/flow-visualizer.js

@@ -1,5 +1,4 @@
 /*
- * FLOW-VISUALIZER.JS - API Flow Visualization Engine
  * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
  * SPDX-License-Identifier: Apache-2.0
  */

python/example_code/cognito/scenarios/identity_pools_example_demo/web/frontend/js/ui-display.js

@@ -1,7 +1,5 @@
-/*
- * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
- * SPDX-License-Identifier: Apache-2.0
- */
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
 
 // Global variable to store current result - make it globally accessible
 window.currentAuthResult = null;