I created 2 Trello accounts, both with same email, one by logging in and the second by using Google Apps with same email, how do I ditch one of them?
How do I delete my Trello account?
I think you probably don't need to.
I did the same thing, because I didn't notice the Google option at first. When I logged in with Google later, it showed me the same information as with my original account.
Just to make sure, I logged out, then logged in with my original account (Gmail address and Trello password), and it showed me the same information. Apparently if you use the same e-mail address, it automatically associates the two.