Hello Norman

At the moment, there's no way to delete tags you've previously created through the plugin's interface. We will add it in the future, but for now - if you wish to delete the tags - you need to do it from wp_amelia_events_tags database table.

As for the second question - if I understood correctly, you want to hide the tag and the date filter, and only show events, like this:

That can be done by adding this custom CSS on the page:

.am-events-filter {
display: none !important;
}