[BUGFIX] Fix sys_file schema in functional test fixture

sys_file table doesn't have 'deleted' or 'hidden' columns.
Using correct columns: uid, pid, storage, identifier, name

Author: CybotTM

Tests/Functional/DataHandling/Fixtures/ReferenceIndex/UpdateReferenceIndexImport.csv

@@ -1,6 +1,6 @@
-"sys_file",,,,,,
-,"uid","pid","deleted","hidden","name","identifier"
-,1,0,0,0,"1.jpg","/1.jpg"
+"sys_file",,,,,
+,"uid","pid","storage","identifier","name"
+,1,0,1,"/1.jpg","1.jpg"
 
 "tt_content",,,,,,
 ,"uid","pid","sys_language_uid","deleted","hidden","bodytext"