Update release-6.4.0.md

releases/release-6.4.0.md

@@ -301,15 +301,9 @@ In v6.4.0-DMR, the key new features and improvements are as follows:
 | TiDB | `tidb_memory_usage_alarm_ratio` | Deleted | This configuration item is no longer effective. |
 | TiDB | `memory-usage-alarm-ratio` | Deleted | Replaced by the system variable [`tidb_memory_usage_alarm_ratio`](/system-variables.md#tidb_memory_usage_alarm_ratio). If this configuration item has been configured in a TiDB version earlier than v6.4.0, it will not take effect after the upgrade. |
 | TiDB | [`pessimistic-txn.constraint-check-in-place-pessimistic`](/tidb-configuration-file.md#constraint-check-in-place-pessimistic-new-in-v640) | Newly added | Controls the default value of the system variable [`tidb_constraint_check_in_place_pessimistic`](/system-variables.md#tidb_constraint_check_in_place_pessimistic-new-in-v630). The default value is `true`. |
-<<<<<<< HEAD
-| TiDB | [`tidb_max_reuse_chunk`](/tidb-configuration-file.md#tidb_max_reuse_chunk-new-in-v640) | Newly added | Controls the maximum cached chunk objects of chunk allocation. The default value is `64`.|
-| TiDB | [`tidb_max_reuse_column`](/tidb-configuration-file.md#tidb_max_reuse_column-new-in-v640) | Newly added | Controls the maximum cached column objects of chunk allocation. The default value is `256`. |
-| TiKV | [`cdc.raw-min-ts-outlier-threshold`](/tikv-configuration-file.md#raw-min-ts-outlier-threshold-new-in-v620) | Deprecated | This configuration item is no longer effective. |
-=======
 | TiDB | [`tidb-max-reuse-chunk`](/tidb-configuration-file.md#tidb-max-reuse-chunk-new-in-v640) | Newly added | Controls the maximum cached chunk objects of chunk allocation. The default value is `64`.|
 | TiDB | [`tidb-max-reuse-column`](/tidb-configuration-file.md#tidb-max-reuse-column-new-in-v640) | Newly added | Controls the maximum cached column objects of chunk allocation. The default value is `256`. |
-| TiKV | [`cdc.raw-min-ts-outlier-threshold`](https://docs.pingcap.com/tidb/v6.2/tikv-configuration-file#raw-min-ts-outlier-threshold-new-in-v620) | Deprecated | This configuration item is no longer effective. |
->>>>>>> c182bb963 (tidb: fix the name of tidb-max-reuse-chunk and tidb-max-reuse-column (#12557))
+| TiKV | [`cdc.raw-min-ts-outlier-threshold`](/tikv-configuration-file.md#raw-min-ts-outlier-threshold-new-in-v620) | Deprecated | This configuration item is no longer effective. |
 | TiKV | [`causal-ts.alloc-ahead-buffer`](/tikv-configuration-file.md#alloc-ahead-buffer-new-in-v640) | Newly added | The pre-allocated TSO cache size (in duration). The default value is `3s`. |
 | TiKV | [`causal-ts.renew-batch-max-size`](/tikv-configuration-file.md#renew-batch-max-size-new-in-v640)| Newly added | Controls the maximum number of TSOs in a timestamp request. The default value is `8192`. |
 | TiKV | [`raftstore.apply-yield-write-size`](/tikv-configuration-file.md#apply-yield-write-size-new-in-v640) | Newly added | Controls the maximum number of bytes that the Apply thread can write for one FSM (Finite-state Machine) in one round of poll. The default value is `32KiB`. This is a soft limit. |