Revert "Show groupable messages."

app/src/main/java/chat/rocket/android/chatroom/ui/ChatRoomAdapter.kt

@@ -36,8 +36,7 @@ class ChatRoomAdapter(private val roomType: String,
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder =
             ViewHolder(parent.inflate(R.layout.item_message), roomType, roomName, presenter)
 
-    override fun onBindViewHolder(holder: ViewHolder, position: Int) =
-        holder.bind(dataSet[position], dataSet.getOrNull(position + 1))
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) = holder.bind(dataSet[position])
 
     override fun getItemCount(): Int = dataSet.size
 
@@ -78,21 +77,12 @@ class ChatRoomAdapter(private val roomType: String,
                      val presenter: ChatRoomPresenter) : RecyclerView.ViewHolder(itemView), MenuItem.OnMenuItemClickListener {
         private lateinit var messageViewModel: MessageViewModel
 
-        fun bind(message: MessageViewModel, nextMessage: MessageViewModel?) = with(itemView) {
+        fun bind(message: MessageViewModel) = with(itemView) {
             messageViewModel = message
 
             image_avatar.setImageURI(message.avatarUri)
             text_sender.text = message.senderName
             text_message_time.content = message.time
-
-            if (nextMessage != null) {
-                if (isSequential(message, nextMessage)) {
-                    image_avatar.setVisible(false)
-                    text_sender.setVisible(false)
-                    text_message_time.setVisible(false)
-                }
-            }
-
             text_content.content = message.content
             text_content.movementMethod = LinkMovementMethod()
             bindAttachment(message, message_attachment, image_attachment, audio_video_attachment, file_name)
@@ -136,9 +126,6 @@ class ChatRoomAdapter(private val roomType: String,
             return true
         }
 
-        private fun isSequential(message: MessageViewModel, nextMessage: MessageViewModel): Boolean =
-            (message.isGroupable && nextMessage.isGroupable) && (message.senderId == nextMessage.senderId)
-
         private fun bindAttachment(message: MessageViewModel,
                                    attachment_container: View,
                                    image_attachment: SimpleDraweeView,

app/src/main/java/chat/rocket/android/chatroom/viewmodel/MessageViewModel.kt

@@ -31,8 +31,6 @@ data class MessageViewModel(val context: Context,
                             private val localRepository: LocalRepository,
                             private val currentServerRepository: CurrentServerRepository) {
     val id: String = message.id
-    val isGroupable = message.groupable
-    val senderId = message.sender?.id
     val avatarUri: String?
     val roomId: String = message.roomId
     val time: CharSequence