move event data out of widgetdata

core/src/widget/data.rs

@@ -1,11 +1,8 @@
-use std::any::TypeId;
-
-use crate::{Widget, util::HashSet};
+use crate::Widget;
 
 pub struct WidgetData {
     pub widget: Box<dyn Widget>,
     pub label: String,
-    pub event_mgrs: HashSet<TypeId>,
     /// dynamic borrow checking
     pub borrowed: bool,
 }
@@ -20,7 +17,6 @@ impl WidgetData {
             widget: Box::new(widget),
             label,
             borrowed: false,
-            event_mgrs: Default::default(),
         }
     }
 }