Delete Scheduler from Nav Bar

I have deactivated AND deleted the Event Calendar/Scheduler plugin, but it still sits on my nav bar. How do I delete it?

In case of WP plugin - go to “admin” - “pages” and just delete the page in question.

Except there is no page for the scheduler…it automatically inserts a page and a nav bar item when you download the plugin, but it doesn’t show in the Pages section. Now I’ve deleted the plugin but the nav bar item is still there…

Now when I try to reinstall the plug-in, it won’t let me b/c a file already exists. Does anyone know how to delete a plug-in folder?

it automatically inserts a page and a nav bar item when you download the plugin
Newly page is registered in list of pages and must appear in the list of pages, the same as manually created pages.
Which version of WP you are using?