message: remove init lower import from fx2trt_oss
  Summary:
  Pull Request resolved:
  removing lower import on __init__.
diff: @@ -8,4 +8,3 @@ from .converter_registry import ( # noqa
  from .fx2trt import TRTInterpreter, TRTInterpreterResult # noqa
  from .input_tensor_spec import InputTensorSpec # noqa
  from .trt_module import TRTModule # noqa
  -from .lower import LowerSetting, Lowerer, lower_to_trt # noqa
  