[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: I62d7e1b0312a16926b06e0bd5eb6fc8be0829d3c
Reviewed-on: https://review.typo3.org/21575
Reviewed-by: Wouter Wolters
Reviewed-by: Philipp Gampe
Reviewed-by: Ingo Pfennigstorf
Tested-by: Ingo Pfennigstorf
Reviewed-by: Markus Klein
Tested-by: Markus Klein