Hi alex_h1,
I went into settings/notifications/calendar & turned off all the badge app icons. When i went directly to the calendar app there was no way to turn off notifications. Also, i couldn't find was how to clear these notifications with the calendar open. Is this not possible ?? Is this new with ios 11 ?? This is because i never saw this type of icon before In calendar. it had appeared by settings when there was a software update but never in the calendar.
Anyway, the annoying badge app icon is no longer showing by my calendar.
many thanks & happy weekend,
sjb_scuba