resolve review

cub/device/dispatch/dispatch_scan_by_key.cuh

@@ -37,7 +37,6 @@
 
 #include "../../agent/agent_scan_by_key.cuh"
 #include "../../thread/thread_operators.cuh"
-// #include "../../grid/grid_queue.cuh"
 #include "../../config.cuh"
 #include "../../util_debug.cuh"
 #include "../../util_device.cuh"
@@ -125,27 +124,8 @@ struct DeviceScanByKeyPolicy
     static constexpr size_t MaxInputBytes = std::max<size_t>(sizeof(KeyT), sizeof(ValueT));
     static constexpr size_t CombinedInputBytes = sizeof(KeyT) + sizeof(ValueT);
 
-    // SM300
-    struct Policy300 : ChainedPolicy<300, Policy300, Policy300>
-    {
-        enum
-        {
-            NOMINAL_4B_ITEMS_PER_THREAD = 6,
-            ITEMS_PER_THREAD =
-                Nominal4BItemsToItemsCombined(NOMINAL_4B_ITEMS_PER_THREAD, CombinedInputBytes),
-        };
-
-        typedef AgentScanByKeyPolicy<
-                128, ITEMS_PER_THREAD,
-                BLOCK_LOAD_WARP_TRANSPOSE,
-                LOAD_DEFAULT,
-                BLOCK_SCAN_WARP_SCANS,
-                BLOCK_STORE_WARP_TRANSPOSE>
-            ScanByKeyPolicyT;
-    };
-
     // SM350
-    struct Policy350 : ChainedPolicy<350, Policy350, Policy300>
+    struct Policy350 : ChainedPolicy<350, Policy350, Policy350>
     {
         enum
         {
@@ -250,7 +230,7 @@ struct DispatchScanByKey:
         KeysInputIteratorT    d_keys_in,              ///< [in] Iterator to the input sequence of key items
         ValuesInputIteratorT  d_values_in,            ///< [in] Iterator to the input sequence of value items
         ValuesOutputIteratorT d_values_out,           ///< [out] Iterator to the input sequence of value items
-        EqualityOp            equality_op,            ///< [in]Binary equality functor
+        EqualityOp            equality_op,            ///< [in] Binary equality functor
         ScanOpT               scan_op,                ///< [in] Binary scan functor
         InitValueT            init_value,             ///< [in] Initial value to seed the exclusive scan
         OffsetT               num_items,              ///< [in] Total number of input items (i.e., the length of \p d_in)