Remove unused code to fix cargo warnings

Signed-off-by: Daniel D’Aquino <daniel@daquino.me>

src/notification_manager/mute_manager.rs

@@ -2,7 +2,6 @@ use super::ExtendedEvent;
 use nostr_sdk::prelude::*;
 
 pub struct MuteManager {
-    relay_url: String,
     client: Client,
 }
 
@@ -11,7 +10,7 @@ impl MuteManager {
         let client = Client::new(&Keys::generate());
         client.add_relay(relay_url.clone()).await?;
         client.connect().await;
-        Ok(MuteManager { relay_url, client })
+        Ok(MuteManager { client })
     }
 
     pub async fn should_mute_notification_for_pubkey(

src/notification_manager/notification_manager.rs

@@ -19,10 +19,6 @@ use std::fs::File;
 
 pub struct NotificationManager {
     db: r2d2::Pool<SqliteConnectionManager>,
-    apns_private_key_path: String,
-    apns_private_key_id: String,
-    apns_team_id: String,
-    apns_environment: a2::client::Endpoint,
     apns_topic: String,
     apns_client: Client,
 
@@ -56,10 +52,6 @@ impl NotificationManager {
         )?;
 
         Ok(Self {
-            apns_private_key_path,
-            apns_private_key_id,
-            apns_team_id,
-            apns_environment,
             apns_topic,
             apns_client: client,
             db,
@@ -209,13 +201,6 @@ impl NotificationManager {
         Ok(relevant_pubkeys)
     }
 
-    fn pubkeys_subscribed_to_event(
-        &self,
-        event: &Event,
-    ) -> Result<HashSet<PublicKey>, Box<dyn std::error::Error>> {
-        self.pubkeys_subscribed_to_event_id(&event.id)
-    }
-
     fn pubkeys_subscribed_to_event_id(
         &self,
         event_id: &EventId,