typo3

The identifier argument has already a string type declaration, so
there is no need to check for a string again.

Resolves: #106910
Releases: main, 13.4
Change-Id: Id534ef1a3dd43d0329e219364fb7b0406aa66d0e
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/89760


Reviewed-by: Benjamin Franzke <ben@bnf.dev>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Garvin Hicking <garvin@hick.ing>
Tested-by: Garvin Hicking <garvin@hick.ing>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Benjamin Franzke <ben@bnf.dev>