[TASK] Remove redundant try/catches in ResourceStorage of FAL

This change simply removes some try/catch statement which did
nothing but re-throw the RuntimeException.

Fixes: #49332
Releases: 6.0, 6.1, 6.2
Change-Id: If419874910547ac7ce2475711f922ae0f59e8e67
Reviewed-on: https://review.typo3.org/22372
Reviewed-by: Markus Klein
Tested-by: Markus Klein