Fix for code lints.

src/python_testing/TC_CC_2_1.py

@@ -36,14 +36,12 @@
 # === END CI TEST ARGUMENTS ===
 
 import logging
-import time
 from typing import Any, Optional, Union
 
 import chip.clusters as Clusters
 from chip.clusters import ClusterObjects as ClusterObjects
-from chip.clusters.ClusterObjects import ClusterAttributeDescriptor
 from chip.testing import matter_asserts
-from chip.testing.matter_testing import MatterBaseTest, TestStep, async_test_body, default_matter_test_main, has_attribute
+from chip.testing.matter_testing import MatterBaseTest, TestStep, async_test_body, default_matter_test_main
 from mobly import asserts
 
 logger = logging.getLogger(__name__)