message: On-block message - code cleaning 2
diff: @@ -278,7 +278,6 @@ namespace eosio { namespace chain {
  uint32_t head_block_num()const;
  block_id_type head_block_id()const;
  account_name head_block_producer()const;
  - // optional<block_header> head_block_header()const;
  block_header head_block_header()const;
  uint32_t last_irreversible_block_num() const;
  