os/bluestore: remove redundant virtual declarations in CacheShard class

Fixes: https://tracker.ceph.com/issues/64445

Signed-off-by: Igor Fedotov <[email protected]>

Author: ifed01

src/os/bluestore/BlueStore.h

@@ -1455,19 +1455,19 @@ class BlueStore : public ObjectStore,
       _trim_to(0);
     }
 
-    virtual void shift_bins() {
+    void shift_bins() {
       std::lock_guard l(lock);
       age_bins.push_front(std::make_shared<int64_t>(0));
     }
-    virtual uint32_t get_bin_count() {
+    uint32_t get_bin_count() {
       std::lock_guard l(lock);
       return age_bins.capacity();
     }
-    virtual void set_bin_count(uint32_t count) {
+    void set_bin_count(uint32_t count) {
       std::lock_guard l(lock);
       age_bins.set_capacity(count);
     }
-    virtual uint64_t sum_bins(uint32_t start, uint32_t end) {
+    uint64_t sum_bins(uint32_t start, uint32_t end) {
       std::lock_guard l(lock);
       auto size = age_bins.size();
       if (size < start) {