raftstore: remove applying snapshot count (#10099)
raftstore: remove applying snapshot count (#10099)

Signed-off-by: Ryan Leung <rleungx@gmail.com>

Co-authored-by: qupeng <61d746964f2cf9aa900605464d8422efaad5ea7d@pingcap.com>
BusyJay/tikv,BusyJay/tikv,c4pt0r/tikv,BusyJay/tikv,BusyJay/tikv