[BUGFIX] Fix dead code path in LanguageService

This check likely predates types being specified, which
makes it unnecessary.

Used command:

> ./Build/Scripts/runTests.sh -s phpstanGenerateBaseline

Resolves: #97979
Releases: main, 11.5
Change-Id: I78af547b9b3c1412c50cc36373973b160f3a82d4
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/75252


Tested-by: core-ci <typo3@b13.com>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>