Remove unused library (#1974)

Author: paulnoirel

libs/labelbox/tests/integration/test_api_keys.py

@@ -4,8 +4,6 @@
 
 from labelbox.schema.timeunit import TimeUnit
 from labelbox.schema.api_key import ApiKey
-from lbox.exceptions import LabelboxError
-# The creation of API keys requires a feature flag to be enabled.
 
 
 @pytest.mark.skipif(