ticdc: remove source id desciption (#15292)

pingcap · Nov 8, 2023 · 54ca621 · 54ca621
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commit 54ca621
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diff --git a/ticdc/ticdc-bidirectional-replication.md b/ticdc/ticdc-bidirectional-replication.md
@@ -32,8 +32,6 @@ TiCDC only replicates incremental data changes that occur after a specified time
     bdr-mode = true
     ```
 
-5. (Optional) If you need to track the data source, set a unique data source ID for each cluster using the [`tidb_source_id`](/system-variables.md#tidb_source_id-new-in-v650) system variable.
-
 After the configuration takes effect, the clusters can perform bi-directional replication.
 
 ## Execute DDL