Removed experimental "command risk assessment" feature (#7799)

This experimental feature received lukewarm reception during internal
testing. Removing from the code base.

codex-rs/mcp-server/src/codex_tool_config.rs

@@ -169,7 +169,6 @@ impl CodexToolCallParam {
             include_apply_patch_tool: None,
             show_raw_agent_reasoning: None,
             tools_web_search_request: None,
-            experimental_sandbox_command_assessment: None,
             additional_writable_roots: Vec::new(),
         };
 

codex-rs/mcp-server/src/codex_tool_runner.rs

@@ -179,7 +179,6 @@ async fn run_codex_tool_session_inner(
                         cwd,
                         call_id,
                         reason: _,
-                        risk,
                         proposed_execpolicy_amendment: _,
                         parsed_cmd,
                     }) => {
@@ -193,7 +192,6 @@ async fn run_codex_tool_session_inner(
                             event.id.clone(),
                             call_id,
                             parsed_cmd,
-                            risk,
                         )
                         .await;
                         continue;

codex-rs/mcp-server/src/exec_approval.rs

@@ -4,7 +4,6 @@ use std::sync::Arc;
 use codex_core::CodexConversation;
 use codex_core::protocol::Op;
 use codex_core::protocol::ReviewDecision;
-use codex_core::protocol::SandboxCommandAssessment;
 use codex_protocol::parse_command::ParsedCommand;
 use mcp_types::ElicitRequest;
 use mcp_types::ElicitRequestParamsRequestedSchema;
@@ -38,8 +37,6 @@ pub struct ExecApprovalElicitRequestParams {
     pub codex_command: Vec<String>,
     pub codex_cwd: PathBuf,
     pub codex_parsed_cmd: Vec<ParsedCommand>,
-    #[serde(skip_serializing_if = "Option::is_none")]
-    pub codex_risk: Option<SandboxCommandAssessment>,
 }
 
 // TODO(mbolin): ExecApprovalResponse does not conform to ElicitResult. See:
@@ -62,7 +59,6 @@ pub(crate) async fn handle_exec_approval_request(
     event_id: String,
     call_id: String,
     codex_parsed_cmd: Vec<ParsedCommand>,
-    codex_risk: Option<SandboxCommandAssessment>,
 ) {
     let escaped_command =
         shlex::try_join(command.iter().map(String::as_str)).unwrap_or_else(|_| command.join(" "));
@@ -85,7 +81,6 @@ pub(crate) async fn handle_exec_approval_request(
         codex_command: command,
         codex_cwd: cwd,
         codex_parsed_cmd,
-        codex_risk,
     };
     let params_json = match serde_json::to_value(&params) {
         Ok(value) => value,