[BUGFIX] Fix PHP 8.0 issues in EXT:info

One warning was triggered by an inline JavaScript
assignment, which is unused since at least v9. It's
therefore removed.

Resolves: #94364
Releases: master
Change-Id: I8c680d393ce7449be17e68757aa1bc8698360667
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/69511


Tested-by: core-ci <typo3@b13.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Jochen <rothjochen@gmail.com>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Jochen <rothjochen@gmail.com>
Reviewed-by: Oliver Bartsch <bo@cedev.de>