does anybody know how to remove contact us section

yea you have to go into your theme and look for footer and remove this line
{{if \IPS\Member::loggedIn()->canUseContactUs() and !( \IPS\Dispatcher::i()->application->directory == 'core' and \IPS\Dispatcher::i()->module and \IPS\Dispatcher::i()->module->key == 'contact' )}}
<li><a rel="nofollow" href='{url="app=core&module=contact&controller=contact" seoTemplate="contact"}' {{if \IPS\Settings::i()->contact_type != 'contact_redirect' }}data-ipsdialog data-ipsDialog-remoteSubmit data-ipsDialog-flashMessage='{lang="contact_sent_blurb"}' data-ipsdialog-title="{lang="contact"}"{{endif}}>{lang='contact'}</a></li>
{{endif}}