Remove try-catch from tests

[csirmazbendeguz]

In general, tests shouldn't contain try-catch blocks

dir-sdk-python/dir-sdk-python/agntcy/dir_sdk/client/test_client.py

Lines 123 to 126 in 1768734

	try:
	self.client.unpublish(unpublish_request)
	except Exception as e:
	assert e is None

Just let the code fail