[TASK] Remove report for ext:compatibility7

The extension does not exist for TYPO3 versions above 8, so the report
must not exist either in these versions.

Resolves: #89963
Releases: master, 9.5
Change-Id: I0de6b2646253a755b554b48dadabbfcb2bc1b795
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/62674


Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Jan Stockfisch <typo3@jan-stockfisch.de>
Tested-by: Guido Schmechel <guido.schmechel@brandung.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Jan Stockfisch <typo3@jan-stockfisch.de>
Reviewed-by: Guido Schmechel <guido.schmechel@brandung.de>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>