Merge remote-tracking branch 'origin/master'

db/db_impl.cc

@@ -1294,12 +1294,6 @@ Status DBImpl::Put(const WriteOptions& o, const Slice& key, const Slice& val) {
 }
 
 Status DBImpl::Delete(const WriteOptions& options, const Slice& key) {
-//  size_t slot_num = *(size_t *)value->c_str();
-//  struct slot_content sc;
-//  std::string vlog_value;
-//  slot_page_->get_slot(slot_num, &sc);
-//  vlog_set_->get_value(sc.vlog_num, sc.value_offset, &vlog_value);
-//  *value = vlog_value;
   size_t slot_num;
   auto s = get_slot_num(ReadOptions(), key, &slot_num);