update: remove wrong lakes, and add important comment

server/map_handler/add_new_lake.py

@@ -174,6 +174,9 @@ def write_json_to_file(lake_name: str, json_data: dict):
             json.dump(data, file, ensure_ascii=False, indent=2)
 
 
+# Plotting the map can take a considerable amount of time, especially when creating maps with many
+# subdivisions. Removing calls to plot_map will speed up the process, but it is recommended to plot the map
+# after each division to ensure that the map was divided as intended.
 def plot_map(divided_map):
     tiles = [gpd.GeoDataFrame(geometry=[tile]) for tile in divided_map]
 

server/map_handler/lake_relations/all_lake_names.json

 [
   "Mjøsa",
-  "Skumsjøen",
-  "Gjersjøen",
-  "Gjersjøen",
-  "Skumsjøen"
+  "Skumsjøen"
 ]
\ No newline at end of file