[CLEANUP] Unused maxListPerPage property in indexed_search

The maxListPerPage class property in the indexed_search Administration
controller ist not used any more and therefore removed.

Releases: master, 6.2
Resolves: #65468
Change-Id: Ic1e13bf0e6f7426d5efb54b0996323ac681c2ed4
Reviewed-on: http://review.typo3.org/37469


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