mds: remove dead code

A const getter already exists.

Signed-off-by: Patrick Donnelly <[email protected]>

Author: batrick

src/mds/Capability.h

@@ -218,8 +218,6 @@ class Capability : public Counter<Capability> {
   void set_cap_id(uint64_t i) { cap_id = i; }
   uint64_t get_cap_id() const { return cap_id; }
 
-  //ceph_seq_t get_last_issue() { return last_issue; }
-
   bool is_suppress() const { return suppress > 0; }
   void inc_suppress() { suppress++; }
   void dec_suppress() { suppress--; }