fix(tvix/castore/directory): no Clone required in put_multiple_start

We don't do any cloning of self in here.

Change-Id: Id6d4aed25244f5a18eb663ad8686fab4c6aaf20b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/13263
Reviewed-by: edef <edef@edef.eu>
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>

tvix/castore/src/directoryservice/grpc.rs

@@ -195,10 +195,7 @@ where
     }
 
     #[instrument(skip_all)]
-    fn put_multiple_start(&self) -> Box<(dyn DirectoryPutter + 'static)>
-    where
-        Self: Clone,
-    {
+    fn put_multiple_start(&self) -> Box<(dyn DirectoryPutter + 'static)> {
         let mut grpc_client = self.grpc_client.clone();
 
         let (tx, rx) = tokio::sync::mpsc::unbounded_channel();