I understand how important it is to be able to best use your device. It is true that in viewing a calendar event, there is not a way to edit it. However, if you go to the event view for the day, you can tap and hold on that specific event to receive the option to edit it. I understand that an edit button itself is easier, and while I can't put it back on there immediately myself, I will be glad to send your request along as a suggestion to the proper department. I do apologize for any inconvenience you may have experienced.