V6.0_edu branch commit has delete source code file of dreamview module.

[Xxfore]

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System information

• OS Platform and Distribution (e.g., Linux Ubuntu 18.04): 18.04
• Apollo installed from (source or binary): source
• Apollo version (3.5, 5.0, 5.5, 6.0): 6.0_edu
• Output of apollo.sh config if on master branch: NA

Steps to reproduce the issue:

Check last merge commit on branch v6.0_edu, It delete some source code , such as modules/dreamview/frontend/src/renderer/routing_editor.js Could anyone share any details about it?

Supporting materials (screenshots, command lines, code/script snippets):

[daohu527]

@lj0919 can you help?