libtracker-miner: Remove miner_fs->priv->directories
libtracker-miner: Remove miner_fs->priv->directories

All its uses have been replaced by TrackerFileNotifier

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