Allow trigger_offset to be unused for now

helix-term/src/ui/completion.rs

@@ -70,6 +70,7 @@ fn row(&self) -> menu::Row {
 pub struct Completion {
     popup: Popup<Menu<CompletionItem>>,
     start_offset: usize,
+    #[allow(dead_code)]
     trigger_offset: usize,
     // TODO: maintain a completioncontext with trigger kind & trigger char
 }