update: minor update

server/map_handler/add_new_lake.py

 import os
 import json
-from math import cos, sqrt, fabs
 import random
+from math import cos
 import geopandas as gpd
 from matplotlib import pyplot as plt
 from shapely.ops import linemerge, unary_union, polygonize
@@ -10,7 +10,6 @@ from shapely.geometry import Polygon, LineString, MultiLineString
 from server.consts import LAKE_RELATIONS_PATH
 
 
-# Read a json file with relation data and send to response object
 def cut_map(self, cursor, lake_name: str, cell_size_in_km: float = 0.5):
     """
     Cuts a map into a grid based on a selected cell size