message: Remove unnecessary lifetime bound in `TitleBar`
diff: @@ -15,7 +15,7 @@ pub struct TitleBar<'a, Message, Renderer: pane_grid::Renderer> {
  style: Renderer::Style,
  }
  -impl<'a, Message, Renderer: 'a> TitleBar<'a, Message, Renderer>
  +impl<'a, Message, Renderer> TitleBar<'a, Message, Renderer>
  where
  Renderer: pane_grid::Renderer,
  {
  