remove example schemas

[PatMyron]

fixes #248

public examples here

although none of them seem to be using any of the common definitions yet

---

could also remove test for these:

cloudformation-cli/tests/test_data_loaders.py

Lines 85 to 90 in 6e9fd5c

	@pytest.mark.parametrize(
	"example", json_files_params(BASEDIR.parent / "examples" / "schema", "*-*-*.json")
	)
	def test_load_resource_spec_example_spec_is_valid(example):
	with example.open("r", encoding="utf-8") as f:
	assert load_resource_spec(f)

[LaikaN57]

From a consumer perspective, there are better public resources to use rather than looking at these examples. I agree with removing these.