use default bucket for checkpoint_s3_uri

Author: Chuyang Deng

tests/integ/test_tf_script_mode.py

@@ -66,10 +66,6 @@ def test_mnist(sagemaker_session, instance_type):
     assert df.size > 0
 
 
-@pytest.mark.skipif(
-    tests.integ.test_region() != "us-east-1",
-    reason="checkpoint s3 bucket is in us-east-1, ListObjectsV2 will fail in other regions",
-)
 def test_checkpoint_config(sagemaker_session, instance_type):
     checkpoint_s3_uri = "s3://{}".format(sagemaker_session.default_bucket())
     checkpoint_local_path = "/test/checkpoint/path"