chore: remove unused dynamic property assignment of $auto_updater_obj from Give_License constructor

[jonwaldstein]

Resolves GIVE-1372

Description

This resolves the follow PHP deprecation notice:

PHP Deprecated:  Creation of dynamic property Give_License::$auto_updater_obj is deprecated in /Users/jonwaldstein/Herd/givewp/wp-content/plugins/give/includes/class-give-license-handler.php on line 233

This property appears to be leftover from the early days of Give when there was an auto updater. I could not find this method or any use of the property anymore, furthermore it was being assigned to null in construct.

Affects

This technically touches the Give License class however, nothing should be affected as this is dead code.

Visuals

N/A

Testing Instructions

• Make sure there is no more php warning
• Make sure our license system works as expected.

Pre-review Checklist

• Acceptance criteria satisfied and marked in related issue
• Relevant @unreleased tags included in DocBlocks
• Includes unit tests
• Reviewed by the designer (if follows a design)
• Self Review of code and UX completed

[pauloiankoski]

Yeah! I couldn’t find any usage of that in any of the repositories.

[rickalday]

Passed manual QA tests