'Deleting a bogus bot will succeed silently.'

def test_patch_bogus_bot(self):

    self.login(self.example_email('hamlet'))
    self.create_bot()
    bot_info = {'full_name': 'Fred'}
    result = self.client_patch('/json/bots/nonexistent-bot@zulip.com', bot_info)
    self.assert_json_error(result, 'No    such    user')
    self.assert_num_bots_equal(1)
