Two e-mail addresses associated with my account, how to get rid of one?


I originally signed up for twitter with my Corporate e-mail but later changed to my personal e-mail, and lo and behold it now appears that both my personal and my Corporate e-mails are associated with my account. I can’t find any way of removing the secondary account, and no documentation etc apart from this thread:

I opened a case on-line with twitter but have not heard back yet, is this really something Twitter support has to fix, or am I overlooking someting in my profile setup?

Thanks in advance!