loadMissingMessages() improved: unused messages polling from local repository removed

app/src/main/java/chat/rocket/android/chatroom/presentation/ChatRoomPresenter.kt

@@ -503,14 +503,11 @@ class ChatRoomPresenter @Inject constructor(
         launch(parent = strategy.jobs) {
             if (chatRoomId != null && chatRoomType != null) {
                 val roomType = roomTypeOf(chatRoomType!!)
-                messagesRepository.getByRoomId(chatRoomId!!)
-                    .sortedByDescending { it.timestamp }.firstOrNull()?.let { lastMessage ->
-
                 val lastSyncDate = messagesRepository.getLastSyncDate()
                 // lastSyncDate or 0. LastSyncDate could be in case when we sent some messages offline(and saved them locally),
                 // but never has obtained chatMessages(or history) from remote. In this case we should sync all chat history from beginning
                 val instant = Instant.ofEpochMilli(lastSyncDate ?: 0).toString()
-
+                //
                 try {
                     val messages =
                         retryIO(description = "history($chatRoomId, $roomType, $instant)") {
@@ -550,7 +547,6 @@ class ChatRoomPresenter @Inject constructor(
             }
         }
     }
-    }
 
     /**
      * Delete the message with the given id.