Remove duplicate battery

datasheets/batteries.json

@@ -43,15 +43,4 @@
         "output voltage [V]":9.0,
         "dimensions [cm]":"11,2 x 3,2 x 3,2"
     },
-    "84599":{
-        "item number":84599,
-        "item description":"Electric 9V Power Functions Battery Box (Rechargeable)",
-        "category":"battery",
-        "price [Euro]":120,
-        "mass [g]":82.0,
-        "delivery time [days]":8,
-        "data source":"https://www.bricklink.com/v2/catalog/catalogitem.page?P=84599&name=Electric%209V%20Battery%20Box%20Power%20Functions%20(Rechargeable)%20with%20Dark%20Bluish%20Gray%20Bottom&category=%5BElectric,%20Battery%20Box%5D#T=S&O={%22iconly%22:0}",
-        "output voltage [V]":9.0,
-        "dimensions [cm]":"15 x 15 x 3,5"
-    }
-}
\ No newline at end of file
+}