Prevent Vim from adding '<++>' after parentheses when filetype=tex

[no one]

(This is the first message I'm writing to a mailing list. My last try
to send this message sucssed but there was problem with the message
subject which somehow became 'Re: failure notice', so please ignore my
last message)

Hi all

While filetype=tex, when I type right parenthesis of the kind ],),}
right after the left parenthesis of the same kind, vim adds '<++>'
after the right parenthesis, and moves the cursor to between the
parentheses. How can I prevent the first action?

Thanks

Daniel