remove gpu from release config (aws#3596)

* remove gpu from release config

* remove cuda version

Author: sallyseok

release_images_training.yml

@@ -32,10 +32,9 @@ release_images:
     arch_type: "x86"
     customer_type: "sagemaker"
     training:
-      device_types: [ "cpu", "gpu" ]
+      device_types: [ "cpu" ]
       python_versions: [ "py39" ]
       os_version: "ubuntu20.04"
-      cuda_version: "cu117"
       example: False
       disable_sm_tag: False
       force_release: False