Enable clippy::redundant_locals (#8750)

This PR enables the
[`clippy::redundant_locals`](https://rust-lang.github.io/rust-clippy/master/index.html#/redundant_locals)
rule and fixes the outstanding violations.

Release Notes:

- N/A

crates/terminal_view/src/terminal_element.rs

@@ -645,7 +645,6 @@ impl TerminalElement {
         });
 
         cx.on_mouse_event({
-            let bounds = bounds;
             let focus = self.focus.clone();
             let terminal = self.terminal.clone();
             move |e: &MouseMoveEvent, phase, cx| {