[BUGFIX] Do not assign variables to removed property

The new IPlocker (supporting IPv6) also removed the public property
AbstractUserAuthentication->lockIP.

However, the original assignments are still in place, as they were forgotten
before the 10.0 release.

The change removes the two assignments.

Resolves: #89226
Releases: master
Change-Id: I9fb7bc2c5dbf523a13e6ba6faa0cd51fe3beffdc
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/61780


Tested-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: TYPO3com <noreply@typo3.com>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>