How to remove User-Agent?

[m4v3r1ck]

Hi...

Just noticed that mutt 0.96.3i adds User-Agent header to outgoing message.
I compiled mutt starting with this:
# CFLAGS="-DNO_XMAILER" ./configure
The default X-Mailer is gone. How to accomplish the same thing for
User-Agent header?

TIA

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