[Forwardport] Removed double occurrences from files.

[mageprince]

Original Pull Request

#16581

Description

Removed double occurrences from jQuery, angular JS files and Magento Setup module's scan function's comment.

Fixed Issues (if relevant)

N/A

Manual testing scenarios

N/A

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[magento-engcom-team]

Hi @mageprince. Thank you for your contribution
Here is some useful tips how you can test your changes using Magento test environment.
Add the comment under your pull request to deploy test or vanilla Magento instance:

• @magento-engcom-team give me test instance - deploy test instance based on PR changes
• @magento-engcom-team give me {$VERSION} instance - deploy vanilla Magento instance

For more details, please, review the Magento Contributor Assistant documentation

[magento-engcom-team]

Hi @orlangur, thank you for the review.
ENGCOM-2222 has been created to process this Pull Request

[sanganinamrata]

@mageprince Hello,

I'll take care of my PR porting by myself.

Thanks :)

[mageprince]

Hi @sanganinamrata,

I think anyone can do PR porting on Magento 2 GitHub repository. Anyway thanks for your feedback. I will not do porting your PR.

Thanks :)