Another lsp tool UI migration (#34009)

https://github.com/user-attachments/assets/54182f0d-43e9-4482-89b9-94db5ddaabf8

Release Notes:

- N/A

crates/inline_completion_button/src/inline_completion_button.rs

@@ -835,10 +835,6 @@ impl InlineCompletionButton {
 
         cx.notify();
     }
-
-    pub fn toggle_menu(&mut self, window: &mut Window, cx: &mut Context<Self>) {
-        self.popover_menu_handle.toggle(window, cx);
-    }
 }
 
 impl StatusItemView for InlineCompletionButton {