Remove duplicate battery (equivalent to 8881-1)

datasheets/batteries.json

@@ -43,17 +43,6 @@
         "output voltage [V]":9.0,
         "dimensions [cm]":"11,2 x 3,2 x 3,2"
     },
-    "59510":{
-        "item number":59510,
-        "item description":"LEGO Power Functions Battery Box ",
-        "category":"battery",
-        "price [Euro]":18,
-        "mass [g]":165.3,
-        "delivery time [days]":3,
-        "data source":"https:\/\/www.brickowl.de\/catalog\/lego-power-functions-battery-box-with-beam-connectors-with-on-off-sticker-59510",
-        "output voltage [V]":9.0,
-        "dimensions [cm]":"8,8 x 6,4 x 3,2"
-    },
     "84599":{
         "item number":84599,
         "item description":"Electric 9V Power Functions Battery Box (Rechargeable)",