Translate it to an empty string and it won't display. The warning shown there can be 1 of the 2 following strings.
Code:
'IMPORTANTPLEASE_BE_AWARE_THAT_EMAILS_MAY_NOT_BE_RE_d493ea' => 'IMPORTANT:<ol><li>Please be aware that emails may not be received by the intended users due to their email settings and spam filter.</li></ol>',
'UE_EMAILFORMWARNING' => 'IMPORTANT:<ol><li>Your email address on your profile is: <strong>%s</strong>.</li><li>Make sure that it is accurate and check your spam filter before sending, because the receiver will use it for his reply.</li><li>Please be aware that emails may not be received by the intended users due to their email settings and spam filter.</li></ol>',
You can use the language overrides feature to translate it to blank or translate it to something else as needed. See the below regarding language overrides.
www.joomlapolis.com/blog/kyle/18701-language-overrides-have-arrived
krileon
