Remove some redundant entity clones (#36274)

`cx.entity()` already returns an owned entity, so there is no need for
these clones.

Release Notes:

- N/A

crates/repl/src/session.rs

@@ -244,7 +244,7 @@ impl Session {
             repl_session_id = cx.entity_id().to_string(),
         );
 
-        let session_view = cx.entity().clone();
+        let session_view = cx.entity();
 
         let kernel = match self.kernel_specification.clone() {
             KernelSpecification::Jupyter(kernel_specification)