Fix warnings

damus/ContentView.swift

@@ -790,7 +790,6 @@ func find_event(state: DamusState, query query_: FindEvent, callback: @escaping
             return
         }
     
-        var attempts = 0
         filter = NostrFilter(ids: [evid], limit: 1)
     }
     

damus/Models/HomeModel.swift

@@ -370,9 +370,7 @@ class HomeModel: ObservableObject {
 
     /// Send the initial filters, just our contact list mostly
     func send_initial_filters(relay_id: String) {
-        var filter = NostrFilter(kinds: [.contacts],
-                                 limit: 1,
-                                 authors: [damus_state.pubkey])
+        let filter = NostrFilter(kinds: [.contacts], limit: 1, authors: [damus_state.pubkey])
         pool.send(.subscribe(.init(filters: [filter], sub_id: init_subid)), to: [relay_id])
     }