Fix clippy::needless_borrow lint violations (#36444)

Release Notes:

- N/A

crates/jj/src/jj_store.rs

@@ -16,7 +16,7 @@ pub struct JujutsuStore {
 
 impl JujutsuStore {
     pub fn init_global(cx: &mut App) {
-        let Some(repository) = RealJujutsuRepository::new(&Path::new(".")).ok() else {
+        let Some(repository) = RealJujutsuRepository::new(Path::new(".")).ok() else {
             return;
         };