Is there a way to hide the "all day" row from the Scheduler?
You can Follow the implementation of a built-in feature, and also find a workaround for the time being, in this page: https://feedback.telerik.com/blazor/1448205-hide-remove-the-all-day-slot. I've added your Vote on your behalf to raise its priority.
using display:none causes all appointments in a Week view to be displayed in the first column.
using height:0; overflow:hidden; seems to work as expected.
Thank you for your input, Roland, I added this information with link back to you in the portal item for others to see.