Remove unnecessary .preventDefault()
Remove unnecessary .preventDefault()

The #djShowToolBarButton element is a div which do not have a default
click action, so calling this method is unnecessary in the click
handler. This slightly simplifies the custom JavaScript.

jazzband/django-debug-toolbar,django-debug-toolbar/django-debug-toolbar,tim-schilling/django-debug-toolbar,tim-schilling/django-debug-toolbar,spookylukey/django-debug-toolbar,spookylukey/django-debug-toolbar,django-debug-toolbar/django-debug-toolbar,tim-schilling/django-debug-toolbar,jazzband/django-debug-toolbar,jazzband/django-debug-toolbar,spookylukey/django-debug-toolbar,django-debug-toolbar/django-debug-toolbar