You published that same post on both accounts yesterday, so that was deliberate, and no accident.

No account can be deleted from the blockchain @nneomanicolas,or @cclujo , it and the posts are here for as long as the blockchain exists.

There is nothing wrong with having two accounts, perhaps you may choose to use them with reason and publish one subject on one account and another different subject on the other account.

Most importantly, to get that total freedom, make right choices and do what is right, do not publish the same posts in both accounts; and
READ THE RULES!!! for the communities you post in, that is the best way to get along;

Now, I would suggest deleting one of the posts by editing and put on there MISTAKE so you can start from there and run your accounts correctly and with dignity, and by all means use both accounts wisely.