Thank you for sharing a link, that clarified things. I was able to make a modification to the snippet to help with this:
https://gist.github.com/elimn/99ca50f97fad30f632d9
Note the last line is commented out with //, remove the // to enable it. However, these is still one section where the end time will continue to show on the single-event page: the event details section. If you wish to also remove the endtime here you will need to create a theme override by following our Themer’s Guide. Create an override for /wp-content/plugins/the-events-calendar/src/views/modules/meta/details.php. Then on line 72 change $end_datetime to $end_date.
Does that make sense and do what you want?
Cheers!
– Brook