[TASK] Avoid usage of includeLLFile in ext:backend NewRecordController

All usage of globally loaded labels has been replaced,
so the usage of the function to load the labels globally
can safely be removed.

Resolves: #100646
Releases: main
Change-Id: Id3c06d35a25177f9edf90ab0a9ca7fba8ce96361
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/78713


Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Jasmina Ließmann <minapokhalo+typo3@gmail.com>
Reviewed-by: Jasmina Ließmann <minapokhalo+typo3@gmail.com>
Reviewed-by: Jörg Bösche <typo3@joergboesche.de>
Reviewed-by: Benni Mack <benni@typo3.org>