Periphery cleanup (#5893)

ElementX/Sources/Services/Room/RoomSummary/RoomEventStringBuilder.swift

@@ -106,6 +106,7 @@ nonisolated struct RoomEventStringBuilder {
                                shouldPrefixSenderName: false)
     }
     
+    // periphery:ignore - might be useful to have
     static func threadListEventStringBuilder(userID: String) -> Self {
         RoomEventStringBuilder(stateEventStringBuilder: .init(userID: userID),
                                messageEventStringBuilder: .init(attributedStringBuilder: AttributedStringBuilder(cacheKey: "threadList", mentionBuilder: PlainMentionBuilder()),

ElementX/Sources/Services/Room/RoomSummary/RoomSummary.swift

@@ -21,13 +21,6 @@ nonisolated struct RoomSummary {
             default: false
             }
         }
-        
-        var isKnock: Bool {
-            switch self {
-            case .knock: true
-            default: false
-            }
-        }
     }
     
     enum LastMessageState { case sending, failed }

ElementX/Sources/Services/Room/RoomSummary/RoomSummaryProvider.swift

@@ -26,7 +26,6 @@ class RoomSummaryProvider: RoomSummaryProviderProtocol {
     private var roomList: RoomListProtocol?
     
     private var cancellables = Set<AnyCancellable>()
-    private var roomListServiceStateCancellable: AnyCancellable?
     private var listUpdatesSubscriptionResult: RoomListEntriesWithDynamicAdaptersResult?
     private var stateUpdatesTaskHandle: TaskHandle?