Cleanup unused code

RiotSwiftUI/Modules/Room/PollHistory/Service/PollHistoryServiceProtocol.swift

@@ -21,13 +21,9 @@ protocol PollHistoryServiceProtocol {
     /// Implementations should return the same publisher if `nextBatch()` is called again before the previous publisher completes.
     func nextBatch() -> AnyPublisher<TimelinePollDetails, Error>
     
-    /// Publishes updates for the polls previously pusblished by the `nextBatch()` publishers.
+    /// Publishes updates for the polls previously pusblished by the `nextBatch()` or `livePolls` publishers.
     var updates: AnyPublisher<TimelinePollDetails, Never> { get }
     
-    /// Publishes errors regarding poll aggregations.
-    /// Note: `nextBatch()` will continue to publish new polls even if some poll isn't being aggregated correctly.
-    var pollErrors: AnyPublisher<Error, Never> { get }
-    
     /// Publishes live polls not related with the current batch.
     var livePolls: AnyPublisher<TimelinePollDetails, Never> { get }