f make static_invoice module private

Author: valentinewallace

lightning/src/offers/mod.rs

@@ -24,6 +24,7 @@ pub mod parse;
 mod payer;
 pub mod refund;
 pub(crate) mod signer;
-pub mod static_invoice;
+#[allow(unused)]
+pub(crate) mod static_invoice;
 #[cfg(test)]
 pub(crate) mod test_utils;