partitioner.rs: un-pub calculate_token_for_partition_key

This function operates on SerializedValues, and so is not type-safe.
Given that we already provide token-calculation API on PreparedStatement
and ClusterState, exposing this method seems redundant.

If it turns out that there are users who need this method and can't use
existing APIs then we can think about providing appropriate safe API,
or making this pub once again as a last resort.

Author: Lorak-mmk

scylla/src/routing/partitioner.rs

@@ -349,7 +349,7 @@ impl PartitionerHasher for CDCPartitionerHasher {
 ///
 /// NOTE: the provided values must completely constitute partition key
 /// and be in the order defined in CREATE TABLE statement.
-pub fn calculate_token_for_partition_key(
+pub(crate) fn calculate_token_for_partition_key(
     serialized_partition_key_values: &SerializedValues,
     partitioner: &PartitionerName,
 ) -> Result<Token, TokenCalculationError> {