remove unused resource

Signed-off-by: tobiaskaminsky <tobias@kaminsky.me>

src/main/res/values/strings.xml

@@ -652,7 +652,6 @@
     <string name="privacy">Privacy</string>
     <string name="file_not_found">File not found!</string>
     <string name="file_not_synced">Failed to sync the desired file. Last version available is shown.</string>
-    <string name="file_not_synced_short">Last version available is shown.</string>
 
     <!-- Auto upload -->
     <string name="autoupload_custom_folder">Set up a custom folder</string>