Remove forbidden `@author` tag

[fredden]

Description

According to https://devdocs.magento.com/guides/v2.4/coding-standards/docblock-standard-general.html#documentation-space, the @author tag is not permitted in Magento. This pull request removes this tag from some modules. Given there are so many instances of this tag, I've opened a small pull request to get the process started. I expect that the linter will force me to fix several other coding standards violations on the way, so having a smaller pull request means that task is easier to manage. I plan to open more pull requests to tackle the other instances of this tag.

See also https://github.com/magento/magento-coding-standard/pull/382 and https://github.com/magento/magento-coding-standard/issues/167

Manual testing scenarios

There are not code changes in this pull request. This pull request only removes forbidden comments.

Contribution checklist

• [x] Pull request has a meaningful description of its purpose
• [x] All commits are accompanied by meaningful commit messages
• [x] All new or changed code is covered with unit/integration tests (if applicable)
• [x] README.md files for modified modules are updated and included in the pull request if any README.md predefined sections require an update
• [x] All automated tests passed successfully (all builds are green)

Resolved issues:

1. [x] resolves magento/magento2#37254: Remove forbidden @author tag