Some lightweight cleanup and renaming for bedrock safety adapter

llama_stack/providers/adapters/safety/bedrock/config.py

@@ -4,21 +4,13 @@
 # This source code is licensed under the terms described in the LICENSE file in
 # the root directory of this source tree.
 
-from typing import Optional
-
-from llama_models.schema_utils import json_schema_type
 from pydantic import BaseModel, Field
-import boto3
 
 
-@json_schema_type
-class BedrockShieldConfig(BaseModel):
+class BedrockSafetyConfig(BaseModel):
     """Configuration information for a guardrail that you want to use in the request."""
 
-    aws_profile: Optional[str] = Field(
-        default='default',
+    aws_profile: str = Field(
+        default="default",
         description="The profile on the machine having valid aws credentials. This will ensure separation of creation to invocation",
     )
-
-
-