removed bad imports

Author: Gabefire

libs/labelbox/src/labelbox/data/serialization/ndjson/converter.py

@@ -4,7 +4,6 @@
 
 from ...annotation_types.collection import LabelCollection
 from .label import NDLabel
-import copy
 
 logger = logging.getLogger(__name__)
 

libs/labelbox/tests/data/annotation_import/test_relationships.py

@@ -1,7 +1,6 @@
 import datetime
 import labelbox as lb
 from labelbox.client import Client
-from labelbox.data.serialization.ndjson.converter import NDJsonConverter
 from labelbox.schema.enums import AnnotationImportState
 from labelbox.schema.media_type import MediaType
 from labelbox.schema.project import Project