OpenBSD does not have unlink in base

Index: scripts/translation-update.sh
--- scripts/translation-update.sh.orig
+++ scripts/translation-update.sh
@@ -100,7 +100,7 @@ updatemo()
 
   # clean the mess
   for LANGCODE in `cat locale/LINGUAS | grep -v "#"`; do
-   unlink ./locale/$LANGCODE/LC_MESSAGES/$LANGCODE.mo
+   rm ./locale/$LANGCODE/LC_MESSAGES/$LANGCODE.mo
   done
  else
   if [ x"$(uname -s)" = x"Linux" ]; then