JavaScript v3: Prepare JavaScript v3 item tracker for updates. (#7556)

Remove JS item tracker for updates.

Author: rlhagerm

.doc_gen/metadata/cross_metadata.yaml

@@ -170,10 +170,6 @@ cross_RDSDataTracker:
         - sdk_version: 3
           github: python/cross_service/aurora_item_tracker
           block_content: cross_RDSDataTracker_Python_block.xml
-    JavaScript:
-      versions:
-        - sdk_version: 3
-          block_content: cross_RDSDataTracker_JavaScriptV3_block.xml
     C++:
       versions:
         - sdk_version: 1