remove log on failed lookup visible/dirty during replacement

[awskii]

so required file could be just dirty, print in case file was not found at all.
Log itself is confusing user that something very bad happened but actually it's not.

WARN[10-25|16:10:37.755] [agg] lookupVisibleFileByItsRange: file not found stepFrom=92 stepTo=94 _visible=0-64;64-96; visibleFilesCount=2
WARN[10-25|16:10:37.755] visible account file of steps 92-94 not found
 
WARN[10-25|16:10:37.755] [agg] lookupVisibleFileByItsRange: file not found stepFrom=80 stepTo=88 _visible=0-64;64-96; visibleFilesCount=2
WARN[10-25|16:10:37.755] visible account file of steps 80-88 not found