[TASK] Remove usage of deprecated "StaticMethod" interface

In docblock tag "Null_" interface "StaticMethod" is used.
However this contract is totally covered by Tag contract.

Resolves: #104762
Releases: main
Change-Id: Icac4e3ba24269d3ef2e0db15f4d670bab229e2b7
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/85810


Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>