Remove service_name from AgentDetails - it's an SDK property not an agent property

Co-authored-by: nikhilNava <211831449+nikhilNava@users.noreply.github.com>

Author: Copilot

libraries/microsoft-agents-a365-observability-core/microsoft_agents_a365/observability/core/agent_details.py

@@ -41,6 +41,3 @@ class AgentDetails:
 
     provider_name: Optional[str] = None
     """The provider name (e.g., openai, anthropic)."""
-
-    service_name: Optional[str] = None
-    """The service name for the agent."""

libraries/microsoft-agents-a365-observability-core/microsoft_agents_a365/observability/core/opentelemetry_scope.py

@@ -35,7 +35,6 @@
     GEN_AI_OPERATION_NAME_KEY,
     GEN_AI_OUTPUT_MESSAGES_KEY,
     GEN_AI_PROVIDER_NAME_KEY,
-    SERVICE_NAME_KEY,
     SOURCE_NAME,
     TELEMETRY_SDK_LANGUAGE_KEY,
     TELEMETRY_SDK_LANGUAGE_VALUE,
@@ -192,8 +191,6 @@ def __init__(
                     self.set_tag_maybe(GEN_AI_ICON_URI_KEY, agent_details.icon_uri)
                     # Set provider name dynamically from agent details
                     self.set_tag_maybe(GEN_AI_PROVIDER_NAME_KEY, agent_details.provider_name)
-                    # Set service name from agent details if available
-                    self.set_tag_maybe(SERVICE_NAME_KEY, agent_details.service_name)
 
                 # Set tenant details if provided
                 if tenant_details: