[stable2407] Backport #6662 (#6801)

Backport #6662 into `stable2407` from eskimor.

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Co-authored-by: eskimor <[email protected]>
Co-authored-by: Andrei Sandu <[email protected]>

Author: 3 people

polkadot/node/network/collator-protocol/src/error.rs

@@ -102,7 +102,7 @@ impl SecondingError {
 			self,
 			PersistedValidationDataMismatch |
 				CandidateHashMismatch |
-				Duplicate | ParentHeadDataMismatch
+				ParentHeadDataMismatch
 		)
 	}
 }