remove duplicate filter types

only use nostrdb::Filter

Signed-off-by: William Casarin <jb55@jb55.com>

enostr/src/relay/pool.rs

@@ -1,5 +1,6 @@
 use crate::relay::{Relay, RelayStatus};
 use crate::{ClientMessage, Result};
+use nostrdb::Filter;
 
 use std::time::{Duration, Instant};
 
@@ -71,6 +72,12 @@ impl RelayPool {
         }
     }
 
+    pub fn subscribe(&mut self, subid: String, filter: Vec<Filter>) {
+        for relay in &mut self.relays {
+            relay.relay.subscribe(subid.clone(), filter.clone());
+        }
+    }
+
     /// Keep relay connectiongs alive by pinging relays that haven't been
     /// pinged in awhile. Adjust ping rate with [`ping_rate`].
     pub fn keepalive_ping(&mut self, wakeup: impl Fn() + Send + Sync + Clone + 'static) {