remove related_identifiers from zenodo

Author: Marko Petric

.zenodo.json

@@ -71,12 +71,5 @@
             "name": "Sailer, Andre"
         }
     ], 
-    "access_right": "open",
-    "related_identifiers": [
-        {
-            "scheme": "doi", 
-            "identifier": "10.5281/zenodo.592244", 
-            "relation": "isVersionOf"
-        }
-    ]
+    "access_right": "open"
 }