Remove unused code

Closes: #1105

damus/Models/ThreadModel.swift

@@ -7,41 +7,16 @@
 
 import Foundation
 
-enum InitialEvent {
-    case event(NostrEvent)
-    case event_id(String)
-    
-    var is_event_id: String? {
-        if case .event_id(let evid) = self {
-            return evid
-        }
-        return nil
-    }
-    
-    var id: String {
-        switch self {
-        case .event(let ev):
-            return ev.id
-        case .event_id(let evid):
-            return evid
-        }
-    }
-}
-
 /// manages the lifetime of a thread
 class ThreadModel: ObservableObject {
     @Published var event: NostrEvent
     var event_map: Set<NostrEvent>
     
-    @Published var loading: Bool = false
-
-    var replies: ReplyMap = ReplyMap()
-    
     init(event: NostrEvent, damus_state: DamusState) {
         self.damus_state = damus_state
         self.event_map = Set()
         self.event = event
-        add_event(event, privkey: nil)
+        add_event(event)
     }
     
     let damus_state: DamusState
@@ -65,9 +40,9 @@ class ThreadModel: ObservableObject {
     }
     
     @discardableResult
-    func set_active_event(_ ev: NostrEvent, privkey: String?) -> Bool {
+    func set_active_event(_ ev: NostrEvent) -> Bool {
         self.event = ev
-        add_event(ev, privkey: privkey)
+        add_event(ev)
         
         //self.objectWillChange.send()
         return false
@@ -96,24 +71,15 @@ class ThreadModel: ObservableObject {
 
         meta_events.limit = 1000
         
-        /*
-        if let last_ev = self.events.last {
-            if last_ev.created_at <= Int64(Date().timeIntervalSince1970) {
-                ref_events.since = last_ev.created_at
-            }
-        }
-         */
-        
         let base_filters = [event_filter, ref_events]
         let meta_filters = [meta_events]
 
         print("subscribing to thread \(event.id) with sub_id \(base_subid)")
-        loading = true
         damus_state.pool.subscribe(sub_id: base_subid, filters: base_filters, handler: handle_event)
         damus_state.pool.subscribe(sub_id: meta_subid, filters: meta_filters, handler: handle_event)
     }
     
-    func add_event(_ ev: NostrEvent, privkey: String?) {
+    func add_event(_ ev: NostrEvent) {
         if event_map.contains(ev) {
             return
         }
@@ -136,7 +102,7 @@ class ThreadModel: ObservableObject {
             if ev.known_kind == .metadata {
                 process_metadata_event(events: damus_state.events, our_pubkey: damus_state.pubkey, profiles: damus_state.profiles, ev: ev)
             } else if ev.is_textlike {
-                self.add_event(ev, privkey: self.damus_state.keypair.privkey)
+                self.add_event(ev)
             }
         }
         
@@ -144,10 +110,6 @@ class ThreadModel: ObservableObject {
             return
         }
         
-        if event_map.contains(event) {
-            loading = false
-        }
-        
         if sub_id == self.base_subid {
             load_profiles(profiles_subid: self.profiles_subid, relay_id: relay_id, load: .from_events(Array(event_map)), damus_state: damus_state)
         }