remove pkg_resources warning

from ObservationSim.ObservationSim import Observation

from ObservationSim._util import parse_args, make_run_dirs, generate_pointing_list

from pkg_resources import get_distribution

from importlib.metadata import version

import os

import yaml

import shutil

        None

    """

    # Get version of CSSTSim Package

    __version__ = get_distribution("CSSTSim").version

    __version__ = version("CSSTSim")

    # Get run datetime

    now = datetime.datetime.now()