Make clippy happy

packages/ssr/tests/styles.rs

@@ -7,7 +7,7 @@ fn static_styles() {
     }
 
     let mut dom = VirtualDom::new(app);
-    _ = dom.rebuild(&mut dioxus_core::NoOpMutations);
+    dom.rebuild(&mut dioxus_core::NoOpMutations);
 
     assert_eq!(
         dioxus_ssr::render(&dom),