Remove custom `from_netcdf` function

[williambdean]

This warning doesnt appear in the new arviz versions

pymc-marketing/pymc_marketing/utils.py

Lines 22 to 41 in ea4498b

	def from_netcdf(filepath: str | Path) -> az.InferenceData:
	"""Load inference data from a netcdf file without `fit_data` group warnings.
	Parameters
	----------
	filepath : str or Path
	The path to the netcdf file.
	Returns
	-------
	az.InferenceData
	The inference data.
	"""
	with warnings.catch_warnings():
	warnings.filterwarnings(
	"ignore",
	category=UserWarning,
	message=r"fit_data group is not defined in the InferenceData scheme",
	)
	return az.from_netcdf(filepath)