Remove duplicate entry type

backend/ar/object_addendum.json

@@ -110,11 +110,10 @@
         "10": "Exchange",
         "11": "In-house production",
         "12": "Material Strain (T\u00f6rzsanyag)",
-        "13": "decedent's estate",
         "14": "Vorlass",
         "15": "Finding",
         "98": "To be checked",
         "99": "Other legal acquisition",
         "16": "Permanent loan"
     }
-}
+}