revert to initially subscribing to all subnets

beacon_chain/nimbus_beacon_node.nim

@@ -2041,13 +2041,7 @@ proc installMessageValidators(node: BeaconNode) =
 
         # data_column_sidecar_{subnet_id}
         #
-        let subnetCount = 
-          if node.config.subscribeAllSubnets:
-            DATA_COLUMN_SIDECAR_SUBNET_COUNT.uint64
-          else:
-            CUSTODY_REQUIREMENT.uint64
-
-        for it in 0'u64 ..< subnetCount:
+        for it in 0'u64 ..< DATA_COLUMN_SIDECAR_SUBNET_COUNT:
           closureScope:  # Needed for inner `proc`; don't lift it out of loop.
             let subnet_id = it
             node.network.addValidator(