[Issue] Remove legacy compatibility code for PHP versions < 8.1

[m2-assistant[bot]]

This issue is automatically created based on existing pull request: magento/magento2#39882: Remove legacy compatibility code for PHP versions < 8.1

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Description (*)

This pull request removes code that was designed to be ran on PHP <8.1. Also, removed checks for PHP_VERSION_ID contact availability, since it's available in all PHP versions

Related Pull Requests

Fixed Issues (if relevant)

1. Fixes magento/magento2#<issue_number>

Manual testing scenarios (*)

1. ...
2. ...

Questions or comments

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)
• [ ] README.md files for modified modules are updated and included in the pull request if any README.md predefined sections require an update
• [ ] All automated tests passed successfully (all builds are green)

[engcom-Dash]

@ihor-sviziev Thank you for the report & collaboration!

Looking at the PR changes we can confirm that for PHP version < 8.0.0 legacy code can be removed. PHP_VERSION_ID is available in all the PHP versions hence we can safely remove the checks for it. Also, T_NAME_QUALIFIED & T_NAME_FULLY_QUALIFIED are available in versions starting from 8.0.0.

Hence confirming the issue.

[github-jira-sync-bot]

:white_check_mark: Jira issue https://jira.corp.adobe.com/browse/AC-14971 is successfully created for this GitHub issue.

[m2-assistant[bot]]

:white_check_mark: Confirmed by @engcom-Dash. Thank you for verifying the issue.
Issue Available: @engcom-Dash, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.