Revert "Route inbound realtime text into turn start or steer" (#12479)

Reverts openai/codex#12469

codex-rs/core/src/codex.rs

@@ -1518,21 +1518,6 @@ impl Session {
         format!("auto-compact-{id}")
     }
 
-    pub(crate) async fn route_realtime_text_input(self: &Arc<Self>, text: String) {
-        handlers::user_input_or_turn(
-            self,
-            self.next_internal_sub_id(),
-            Op::UserInput {
-                items: vec![UserInput::Text {
-                    text,
-                    text_elements: Vec::new(),
-                }],
-                final_output_json_schema: None,
-            },
-        )
-        .await;
-    }
-
     pub(crate) async fn get_total_token_usage(&self) -> i64 {
         let state = self.state.lock().await;
         state.get_total_token_usage(state.server_reasoning_included())