remove unused imports

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/src/main/java/com/nextcloud/talk/controllers/ChatController.kt

@@ -136,8 +136,6 @@ import com.stfalcon.chatkit.commons.ImageLoader
 import com.stfalcon.chatkit.commons.models.IMessage
 import com.stfalcon.chatkit.messages.MessageHolders
 import com.stfalcon.chatkit.messages.MessageHolders.ContentChecker
-import com.stfalcon.chatkit.messages.MessageInput
-import com.stfalcon.chatkit.messages.MessagesList
 import com.stfalcon.chatkit.messages.MessagesListAdapter
 import com.stfalcon.chatkit.utils.DateFormatter
 import com.vanniktech.emoji.EmojiPopup