libtracker-miner: Do not perform removed files check if crawling was cancelled.
libtracker-miner: Do not perform removed files check if crawling was cancelled.

Since the logic is "remove from the hashtable all existing files, so the remainder
can be deleted", there are chances that a file could be left there when crawling is
interrupted.

outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker