Is this not released? The video guides show that you can delete elements.
unfortunately we had to move this to a beta group and later discovered more complexities with it and had to close the beta group and roll the feature back. Apologies for the inconvenience. The team is working really really hard on it and we know how big of a deal this is along with other editing capabilities. I do not have an official ETA on it. The announcement above is the reason we don't pre-announce anything until it has shipped. We learned the hard way!