[BUGFIX] Cleanup permission settings in factory configuration

DefaultConfiguration now contains sane values for fileCreateMask
and folderCreateMask, so the values from FactoryConfiguration
can be removed.

Resolves: #49732
Related: #49162
Releases: 6.2

Change-Id: I7225648cebad697850fd2a728c021ad4ffe80b88
Reviewed-on: https://review.typo3.org/22012
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters