Only expose stale RGS age limit with std

Author: arik-so

lightning-rapid-gossip-sync/src/processing.rs

@@ -34,6 +34,7 @@ const MAX_INITIAL_NODE_ID_VECTOR_CAPACITY: u32 = 50_000;
 
 /// We remove disallow gossip data that's more than two weeks old, per BOLT 7's
 /// suggestion.
+#[cfg(feature = "std")]
 const STALE_RGS_UPDATE_AGE_LIMIT_SECS: u64 = 60 * 60 * 24 * 14;
 
 impl<NG: Deref<Target=NetworkGraph<L>>, L: Deref> RapidGossipSync<NG, L> where L::Target: Logger {