Remove duplicate strings

app/src/main/res/values-de/strings.xml

@@ -28,7 +28,6 @@
     <string name="title_announcement">Ankündigung</string>
     <string name="title_description">Beschreibung</string>
     <string name="title_licence">Licence</string> <!-- TODO Add translation -->
-    <string name="title_are_you_sure">Are you sure?</string> <!-- TODO Add translation -->
 
     <!-- Actions -->
     <string name="action_connect">Verbinde</string>

app/src/main/res/values-ru-rRU/strings.xml

@@ -22,7 +22,6 @@
     <string name="title_update_profile">Обновить профиль</string>
     <string name="title_about">О программе</string>
     <string name="title_create_channel">Создать новый канал</string>
-    <string name="title_are_you_sure">Are you sure?</string> <!-- TODO Add translation -->
     <string name="title_channel_details">Channel Details</string> <!-- TODO add translation -->
     <string name="title_topic">Тема</string>
     <string name="title_announcement">Объявление</string>
@@ -164,7 +163,6 @@
     <string name="msg_view_more">больше</string>
     <string name="msg_view_less">меньше</string>
     <string name="msg_permalink_copied">Ссылка скопирована</string>
-    <string name="msg_muted_on_this_channel">You are muted on this channel</string> <!-- TODO - Add proper translation -->
     <string name="msg_no_topic">No topic added</string> <!-- TODO Add translation -->
     <string name="msg_no_announcement">No announcement added</string> <!-- TODO Add translation -->
     <string name="msg_no_description">No description added</string> <!-- TODO Add translation -->