Drop Arcs around lightning-liquidity's DefaultTimeProvider

There's no need for these given `DefaultTimeProvider` is a unit
struct.

Author: TheBlueMatt

lightning-background-processor/src/lib.rs

@@ -1953,7 +1953,7 @@ mod tests {
 		Arc<ChannelManager>,
 		Arc<dyn Filter + Sync + Send>,
 		Arc<Persister>,
-		Arc<DefaultTimeProvider>,
+		DefaultTimeProvider,
 	>;
 
 	struct Node {

lightning-liquidity/src/manager.rs

@@ -318,7 +318,7 @@ impl<
 		CM: Deref + Clone,
 		C: Deref + Clone,
 		K: Deref + Clone,
-	> LiquidityManager<ES, NS, CM, C, K, Arc<DefaultTimeProvider>>
+	> LiquidityManager<ES, NS, CM, C, K, DefaultTimeProvider>
 where
 	ES::Target: EntropySource,
 	NS::Target: NodeSigner,
@@ -335,7 +335,6 @@ where
 		service_config: Option<LiquidityServiceConfig>,
 		client_config: Option<LiquidityClientConfig>,
 	) -> Result<Self, lightning::io::Error> {
-		let time_provider = Arc::new(DefaultTimeProvider);
 		Self::new_with_custom_time_provider(
 			entropy_source,
 			node_signer,
@@ -345,7 +344,7 @@ where
 			kv_store,
 			service_config,
 			client_config,
-			time_provider,
+			DefaultTimeProvider,
 		)
 		.await
 	}
@@ -1046,7 +1045,7 @@ impl<
 		CM: Deref + Clone,
 		C: Deref + Clone,
 		KS: Deref + Clone,
-	> LiquidityManagerSync<ES, NS, CM, C, KS, Arc<DefaultTimeProvider>>
+	> LiquidityManagerSync<ES, NS, CM, C, KS, DefaultTimeProvider>
 where
 	ES::Target: EntropySource,
 	NS::Target: NodeSigner,

lightning-liquidity/src/utils/time.rs

@@ -1,5 +1,6 @@
 //! Utilities for time handling in LSPS5 service.
 
+use core::ops::Deref;
 use core::time::Duration;
 
 /// Trait defining a time provider for LSPS5 service.
@@ -12,6 +13,11 @@ pub trait TimeProvider {
 }
 
 /// Default time provider using the system clock.
+///
+/// You likely don't need to use this directly, it is used automatically with
+/// [`LiquidityManager::new`]
+///
+/// [`LiquidityManager::new`]: crate::manager::LiquidityManager::new
 #[derive(Clone, Debug)]
 #[cfg(feature = "time")]
 pub struct DefaultTimeProvider;
@@ -23,3 +29,10 @@ impl TimeProvider for DefaultTimeProvider {
 		SystemTime::now().duration_since(UNIX_EPOCH).expect("system time before Unix epoch")
 	}
 }
+#[cfg(feature = "time")]
+impl Deref for DefaultTimeProvider {
+	type Target = Self;
+	fn deref(&self) -> &Self {
+		self
+	}
+}