[TASK] Remove non-evaluated parameter from _GP function calls

Remove second (no longer evaluated) _GP() function call parameter.

Resolves: #54106
Releases: 6.2
Change-Id: I5b8f6401a07a7291c893a7e82f224c89f0e6404e
Reviewed-on: https://review.typo3.org/25803
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn