Remove pytest_run --options option.

[jsirois]

This is slated for removal in 1.19.0.dev2 and requires:

• Remove the option:
  

  pants/src/python/pants/backend/python/tasks/pytest_run.py

  Lines 115 to 116 in ead235c

  	register('--options', type=list, fingerprint=True,
  	help='Pass these options to pytest. You can also use pass-through args.')

• Remove its use in production:
  

  pants/src/python/pants/backend/python/tasks/pytest_run.py

  Lines 636 to 638 in ead235c

  	if self.get_options().options:
  	for opt in self.get_options().options:
  	args.extend(safe_shlex_split(opt))

• Remove its use in tests:
  

  pants/tests/python/pants_test/backend/python/tasks/test_pytest_run.py

  Lines 875 to 891 in b3cdd8a

  	def test_passthrough_added_after_options(self):
  	with self.marking_tests() as (target, assert_test_run, assert_test_not_run):
  	self.run_tests([target], '-m', 'purple or red', options=['-k', 'two'])
  	assert_test_not_run('test_one')
  	assert_test_run('test_two')
  	assert_test_not_run('test_three')
  	assert_test_not_run('test_four')
  	assert_test_not_run('test_five')
  	def test_options_shlexed(self):
  	with self.marking_tests() as (target, assert_test_run, assert_test_not_run):
  	self.run_tests([target], options=["-m 'purple or red'"])
  	assert_test_not_run('test_one')
  	assert_test_run('test_two')
  	assert_test_not_run('test_three')
  	assert_test_run('test_four')
  	assert_test_not_run('test_five')

[RemiTorracinta]

Looks like at least some of this is done?

[jsirois]

Yup! All done by @blorente in #8123.