Ok i'M going to bed ! there is no humain way that i was able to find to "Delete" an Event.
Here some suggestion if you were really badly in lack of Switch.
1-Mostly everything can be done with Variable so if you have not use your 5000 yet, there is still hope that you can use them as switch.
2-If your again lacking more switch, i suggest you raise your item to 5000 then have all those you are not using to be added with the chest you are opening(leave it blank) and use the item held precursor as a switch.
3-Then again if you really are in search for each and every detail to upgrade have have more switch, then i totaly suggest that you go for a second opus of your first game doing a Chapiter like RPG with a Volume 2-3-4-5-6 and so on.
4-Then if your still lacking something...then i guess there isn't much more i can suggest to help
PS: I was about to getting freaking insane trying to find a new solution for this one
it's 3:32 in the morning and i wasnt able to go sleep as my brain was totaly focus on finding you a solution so here is my answer and hopefully, my salvation for the night
lololol
GOod luck!
Elistios