Temporarily allow some unused dual-funding code

lightning/src/ln/channel.rs

@@ -1092,6 +1092,7 @@ impl_writeable_tlv_based!(PendingChannelMonitorUpdate, {
 pub(super) enum ChannelPhase<SP: Deref> where SP::Target: SignerProvider {
 	UnfundedOutboundV1(OutboundV1Channel<SP>),
 	UnfundedInboundV1(InboundV1Channel<SP>),
+	#[allow(dead_code)] // TODO(dual_funding): Remove once creating V2 channels is enabled.
 	UnfundedOutboundV2(OutboundV2Channel<SP>),
 	UnfundedInboundV2(InboundV2Channel<SP>),
 	Funded(Channel<SP>),
@@ -3908,6 +3909,7 @@ pub(super) struct DualFundingChannelContext {
 // Counterparty designates channel data owned by the another channel participant entity.
 pub(super) struct Channel<SP: Deref> where SP::Target: SignerProvider {
 	pub context: ChannelContext<SP>,
+	#[allow(dead_code)] // TODO(dual_funding): Remove once contribution to V2 channels is enabled.
 	pub dual_funding_channel_context: Option<DualFundingChannelContext>,
 	/// The current interactive transaction construction session under negotiation.
 	pub interactive_tx_constructor: Option<InteractiveTxConstructor>,
@@ -8509,6 +8511,7 @@ pub(super) struct OutboundV2Channel<SP: Deref> where SP::Target: SignerProvider
 }
 
 impl<SP: Deref> OutboundV2Channel<SP> where SP::Target: SignerProvider {
+	#[allow(dead_code)] // TODO(dual_funding): Remove once creating V2 channels is enabled.
 	pub fn new<ES: Deref, F: Deref>(
 		fee_estimator: &LowerBoundedFeeEstimator<F>, entropy_source: &ES, signer_provider: &SP,
 		counterparty_node_id: PublicKey, their_features: &InitFeatures, funding_satoshis: u64,
@@ -8838,6 +8841,7 @@ impl<SP: Deref> InboundV2Channel<SP> where SP::Target: SignerProvider {
 	///
 	/// [`msgs::AcceptChannelV2`]: crate::ln::msgs::AcceptChannelV2
 	#[cfg(test)]
+	#[allow(dead_code)] // TODO(dual_funding): Remove once contribution to V2 channels is enabled.
 	pub fn get_accept_channel_v2_message(&self) -> msgs::AcceptChannelV2 {
 		self.generate_accept_channel_v2_message()
 	}