Un-expose two functions which aren't useful and have no (real) docs

Author: TheBlueMatt

lightning/src/ln/chan_utils.rs

@@ -526,7 +526,7 @@ pub fn make_funding_redeemscript(broadcaster: &PublicKey, countersignatory: &Pub
 }
 
 /// panics if htlc.transaction_output_index.is_none()!
-pub fn build_htlc_transaction(prev_hash: &Txid, feerate_per_kw: u32, contest_delay: u16, htlc: &HTLCOutputInCommitment, broadcaster_delayed_payment_key: &PublicKey, revocation_key: &PublicKey) -> Transaction {
+pub(crate) fn build_htlc_transaction(prev_hash: &Txid, feerate_per_kw: u32, contest_delay: u16, htlc: &HTLCOutputInCommitment, broadcaster_delayed_payment_key: &PublicKey, revocation_key: &PublicKey) -> Transaction {
 	let mut txins: Vec<TxIn> = Vec::new();
 	txins.push(TxIn {
 		previous_output: OutPoint {
@@ -1177,8 +1177,7 @@ impl<'a> TrustedCommitmentTransaction<'a> {
 	}
 }
 
-/// Get the transaction number obscure factor
-pub fn get_commitment_transaction_number_obscure_factor(
+pub(crate) fn get_commitment_transaction_number_obscure_factor(
 	broadcaster_payment_basepoint: &PublicKey,
 	countersignatory_payment_basepoint: &PublicKey,
 	outbound_from_broadcaster: bool,