remove unused import

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

app/src/main/java/com/nextcloud/talk/adapters/messages/MagicIncomingTextMessageViewHolder.kt

@@ -48,7 +48,6 @@ import com.nextcloud.talk.application.NextcloudTalkApplication.Companion.sharedA
 import com.nextcloud.talk.databinding.ItemCustomIncomingTextMessageBinding
 import com.nextcloud.talk.models.json.chat.ChatMessage
 import com.nextcloud.talk.ui.recyclerview.MessageSwipeCallback
-import com.nextcloud.talk.ui.theme.ServerTheme
 import com.nextcloud.talk.ui.theme.ViewThemeUtils
 import com.nextcloud.talk.utils.ApiUtils
 import com.nextcloud.talk.utils.DisplayUtils