Update tests

tests/test_obs_img_utils_api.py

@@ -16,12 +16,9 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-import pytest
-
 from unittest.mock import patch
 
 from obs_img_utils.api import OBSImageUtil, package_type
-from obs_img_utils.exceptions import PackageVersionExceptionOBS
 
 
 class TestAPI:
@@ -46,9 +43,6 @@ def test_version_compare(self):
         result = self.downloader._version_compare('1.0', '2.0', '<')
         assert result
 
-        with pytest.raises(PackageVersionExceptionOBS):
-            self.downloader._version_compare('2.0', '1.0', '===')
-
     @patch.object(OBSImageUtil, '_get_image_checksum')
     @patch('obs_img_utils.api.time')
     def test_wait_for_new_image(self, mock_time, mock_get_checksum):