message: remove priorityqueue idea
diff: @@ -106,20 +106,6 @@ struct SortingState {
  unordered_map<idx_t, idx_t> sorting_to_blob_col;
  };
  -struct MergePair {
  -public:
  - explicit MergePair(idx_t pair_idx) : pair_idx(pair_idx), l_start(0), r_start(0) {
  - }
  -
  - const idx_t pair_idx;
  - idx_t l_start;
  - idx_t r_start;
  -
  - bool operator<(const MergePair &other) const {
  - return pair_idx < other.pair_idx;
  - }
  -};
  -
  class OrderGlobalState : public GlobalOperatorState {
  public:
  OrderGlobalState(PhysicalOrder &order, RowLayout payload_layout)
  @@ -152,7 +138,6 @@ public:
  idx_t memory_per_thread;
  //! Progress in merge path stage
  - std::priority_queue<MergePair> merge_pairs;
  idx_t pair_idx;
  idx_t l_start;
  idx_t r_start;
  