Remove legacy ByteDeserializer test

Author: Balaji Veeramani

tests/unit/test_predictor.py

@@ -20,7 +20,6 @@
 import pytest
 from mock import Mock, call, patch
 
-from sagemaker.deserializers import BytesDeserializer
 from sagemaker.predictor import Predictor
 from sagemaker.predictor import (
     json_serializer,
@@ -184,12 +183,6 @@ def test_json_deserializer_invalid_data():
     assert "column" in str(error)
 
 
-def test_bytes_deserializer():
-    result = BytesDeserializer().deserialize(io.BytesIO(b"[1, 2, 3]"), "application/json")
-
-    assert result == b"[1, 2, 3]"
-
-
 def test_string_deserializer():
     result = StringDeserializer()(io.BytesIO(b"[1, 2, 3]"), "application/json")