BLD: remove distutil from setup.py

[sabonerune]

Remove distutil from setup.py

• Remove distutils.version.LooseVersion.

  Cython version checking is done in pyproject.toml so there is no need to check it.

  The ability to build if you have a .cpp files even if Cython is not installed will continue to be supported.
  ref: https://setuptools.pypa.io/en/latest/userguide/ext_modules.html#distributing-extensions-compiled-with-cython

• Remove distutils.spawn.spawn and distutils.errors.DistutilsExecError.

  pyopenjtalk/setup.py

  Lines 111 to 172 in 48dd78c

  	# Workaround for `distutils.spawn` problem on Windows python < 3.9
  	# See details: [bpo-39763: distutils.spawn now uses subprocess (GH-18743)]
  	# (https://github.com/python/cpython/commit/1ec63b62035e73111e204a0e03b83503e1c58f2e)
  	def test_quoted_arg_change():
  	child_script = """
  	import os
  	import sys
  	if len(sys.argv) > 5:
  	try:
  	os.makedirs(sys.argv[1], exist_ok=True)
  	with open(sys.argv[2], mode=sys.argv[3], encoding=sys.argv[4]) as fd:
  	fd.write(sys.argv[5])
  	except OSError:
  	pass
  	"""
  	try:
  	# write
  	package_build_dir = "build"
  	file_name = join(package_build_dir, "quoted_arg_output")
  	output_mode = "w"
  	file_encoding = "utf8"
  	arg_value = '"ARG"'
  	spawn(
  	[
  	sys.executable,
  	"-c",
  	child_script,
  	package_build_dir,
  	file_name,
  	output_mode,
  	file_encoding,
  	arg_value,
  	]
  	)
  	# read
  	with open(file_name, mode="r", encoding=file_encoding) as fd:
  	return fd.readline() != arg_value
  	except (DistutilsExecError, TypeError):
  	return False
  	def escape_string_macro_arg(s):
  	return s.replace("\\", "\\\\").replace('"', '\\"')
  	def escape_macro_element(x):
  	(k, arg) = x
  	return (k, escape_string_macro_arg(arg)) if type(arg) == str else x
  	def escape_macros(macros):
  	return list(map(escape_macro_element, macros))
  	custom_define_macros = (
  	escape_macros
  	if platform_is_windows and test_quoted_arg_change()
  	else (lambda macros: macros)
  	)

  
  This bug seems to have been patched by setuptools>=60.0.0.
  Therefore, this code can be made unnecessary by changing the version of setuptools only on Windows.

  It may be better to upgrade the version of setuptools on other OS as well.
  However, since I can't reproduce pyopenjtalk cannot be installed in google colab #27 , So I leave it as is.