Suppress Taproot warnings.

Taproot is not yet being actively used, and this commit suppresses
the noisy warning generation.

Author: arik-so

lightning/src/sign/mod.rs

@@ -1699,6 +1699,7 @@ impl EcdsaChannelSigner for InMemorySigner {
 }
 
 #[cfg(taproot)]
+#[allow(unused)]
 impl TaprootChannelSigner for InMemorySigner {
 	fn generate_local_nonce_pair(
 		&self, commitment_number: u64, secp_ctx: &Secp256k1<All>,

lightning/src/sign/type_resolver.rs

@@ -8,6 +8,7 @@ where
 	// in practice, this will only ever be an EcdsaChannelSigner (specifically, Writeable)
 	Ecdsa(<SP::Target as SignerProvider>::EcdsaSigner),
 	#[cfg(taproot)]
+	#[allow(unused)]
 	Taproot(<SP::Target as SignerProvider>::TaprootSigner),
 }
 
@@ -19,6 +20,7 @@ where
 		match self {
 			ChannelSignerType::Ecdsa(ecs) => ecs,
 			#[cfg(taproot)]
+			#[allow(unused)]
 			ChannelSignerType::Taproot(tcs) => tcs,
 		}
 	}
@@ -27,6 +29,7 @@ where
 		match self {
 			ChannelSignerType::Ecdsa(ecs) => ecs,
 			#[cfg(taproot)]
+			#[allow(unused)]
 			ChannelSignerType::Taproot(tcs) => tcs,
 		}
 	}

lightning/src/util/test_channel_signer.rs

@@ -352,6 +352,7 @@ impl EcdsaChannelSigner for TestChannelSigner {
 }
 
 #[cfg(taproot)]
+#[allow(unused)]
 impl TaprootChannelSigner for TestChannelSigner {
 	fn generate_local_nonce_pair(&self, commitment_number: u64, secp_ctx: &Secp256k1<All>) -> PublicNonce {
 		todo!()