fix clippy warning on clippy 0.1.69 (#9204)

# Description
As title, when I run clippy locally, I get something like following
warning:
<img width="1383" alt="Screenshot 2023-05-15 at 22 34 57"
src="https://github.com/nushell/nushell/assets/22256154/4d4254bc-9e42-437e-9169-d15e9a97aa57">

This pr is going to fix it

# User-Facing Changes
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# Tests + Formatting
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crates/nu-command/src/filters/items.rs

@@ -99,7 +99,6 @@ impl Command for Items {
             PipelineData::Value(Value::Record { cols, vals, .. }, ..) => Ok(cols
                 .into_iter()
                 .zip(vals.into_iter())
-                .into_iter()
                 .map_while(run_for_each_item)
                 .into_pipeline_data(ctrlc)),
             // Errors

crates/nu-protocol/src/engine/engine_state.rs

@@ -1155,11 +1155,7 @@ impl<'a> StateWorkingSet<'a> {
     }
 
     pub fn unique_overlay_names(&self) -> HashSet<&Vec<u8>> {
-        let mut names: HashSet<&Vec<u8>> = self
-            .permanent_state
-            .active_overlay_names(&[])
-            .into_iter()
-            .collect();
+        let mut names: HashSet<&Vec<u8>> = self.permanent_state.active_overlay_names(&[]).collect();
 
         for scope_frame in self.delta.scope.iter().rev() {
             for overlay_id in scope_frame.active_overlays.iter().rev() {