Small fix

Author: dmytrostruk

rust/src/session.rs

@@ -526,7 +526,6 @@ impl Session {
             reasoning_summary: opts.reasoning_summary,
             context_tier: opts.context_tier,
             model_capabilities: opts.model_capabilities,
-            ..ModelSwitchToRequest::default()
         };
         self.rpc().model().switch_to(request).await?;
         Ok(())