fix: remove us-isob-east-1 for the latest fw

Author: Shibo Xing

src/sagemaker/image_uri_config/pytorch.json

@@ -815,7 +815,6 @@
                     "us-east-2": "763104351884",
                     "us-gov-east-1": "446045086412",
                     "us-gov-west-1": "442386744353",
-                    "us-iso-east-1": "886529160074",
                     "us-west-1": "763104351884",
                     "us-west-2": "763104351884"
                 },
@@ -1589,7 +1588,6 @@
                     "us-gov-east-1": "446045086412",
                     "us-gov-west-1": "442386744353",
                     "us-iso-east-1": "886529160074",
-                    "us-isob-east-1": "094389454867",
                     "us-west-1": "763104351884",
                     "us-west-2": "763104351884"
                 },