[PLT-1274] Vb/deprecate bulkimportrequest plt 1274 (#1821)

Author: vbrodsky

libs/labelbox/src/labelbox/orm/model.py

@@ -386,7 +386,6 @@ class Entity(metaclass=EntityMeta):
         Review: Type[labelbox.Review]
         User: Type[labelbox.User]
         LabelingFrontend: Type[labelbox.LabelingFrontend]
-        BulkImportRequest: Type[labelbox.BulkImportRequest]
         Benchmark: Type[labelbox.Benchmark]
         IAMIntegration: Type[labelbox.IAMIntegration]
         LabelingFrontendOptions: Type[labelbox.LabelingFrontendOptions]