[fix] 1x.com tests

searx/tests/engines/test_www1x.py

         results = www1x.response(response)
         self.assertEqual(type(results), list)
         self.assertEqual(len(results), 1)
-        self.assertEqual(results[0]['url'], 'https://1x.com/photo/123456')
-        self.assertEqual(results[0]['thumbnail_src'], 'https://1x.com/images/user/testimage-123456.jpg')
+        self.assertEqual(results[0]['url'], 'http://1x.com/photo/123456')
+        self.assertEqual(results[0]['thumbnail_src'], 'http://1x.com/images/user/testimage-123456.jpg')
         self.assertEqual(results[0]['content'], '')
         self.assertEqual(results[0]['template'], 'images.html')