Remove support for put_file_bytes with an iterable of bytes or strings

[ysimonson]

put_file_bytes with an iterable of bytes or strings is deprecated, as any of the alternatives are more pythonic and likely more efficient. It should be remove eventually (perhaps coinciding with pachyderm core v2.0 release?):

python-pachyderm/src/python_pachyderm/mixin/pfs.py

Lines 425 to 439 in bbf2d25

	if isinstance(value, collections.abc.Iterable) and not isinstance(value, (str, bytes)):
	warnings.warn(
	"'put_file_bytes' with an iterable 'value' is deprecated, use file-like objects or bytestrings instead",
	DeprecationWarning,
	)
	reqs = put_file_from_iterable_reqs(
	value,
	file=pfs_proto.File(commit=commit_from(commit), path=path),
	delimiter=delimiter,
	target_file_datums=target_file_datums,
	target_file_bytes=target_file_bytes,
	overwrite_index=overwrite_index,
	header_records=header_records,
	)
	return self._req(Service.PFS, "PutFile", req=reqs)