Remove redundant function declaration

Author: petere

src/backend/catalog/partition.c

@@ -189,9 +189,6 @@ static int	get_partition_bound_num_indexes(PartitionBoundInfo b);
 static int	get_greatest_modulus(PartitionBoundInfo b);
 static uint64 compute_hash_value(PartitionKey key, Datum *values, bool *isnull);
 
-/* SQL-callable function for use in hash partition CHECK constraints */
-PG_FUNCTION_INFO_V1(satisfies_hash_partition);
-
 /*
  * RelationBuildPartitionDesc
  *		Form rel's partition descriptor