os: remove unused local variable

Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>

diff --git a/src/os/kstore/KStore.cc b/src/os/kstore/KStore.cc
index dae508b1adb6ffbe5aaf0b27753185e1e20cf4ea..7da2e04fddd346dce8a39bdf15588cb9e85d3de4 100644 (file)
--- a/src/os/kstore/KStore.cc
+++ b/src/os/kstore/KStore.cc
@@ -3694,7 +3694,6 @@ int KStore::_remove_collection(TransContext *txc, coll_t cid,
 {
   dout(15) << __func__ << " " << cid << dendl;
   int r;
-  bufferlist empty;
 
   {
     RWLock::WLocker l(coll_lock);