Hi Colin,
you can do it by using template override, here the steps:
1. for module, copy default.php from /modules/mod_community_events/tmpl/ to /templates/[your frontend template]/html/mod_community_events/
2. edit it remove this code from line 32
<a href="<?php echo $event->getGuestLink(COMMUNITY_EVENT_STATUS_ATTEND); ?>">
<?php echo JText::sprintf((!CStringHelper::isSingular($event->confirmedcount)) ? 'COM_COMMUNITY_EVENTS_ATTANDEE_COUNT_MANY' : 'COM_COMMUNITY_EVENTS_ATTANDEE_COUNT', $event->confirmedcount); ?>
3. for events listing copy list.php from /components/com_community/templates/jomsocial/layouts/events/ to /templates/[frontend template]/com_community/html/layouts/events/
4. edit it and remove the code at line 252
<li>
<svg class="joms-icon" viewBox="0 0 16 16">
<use xlink:href="<?php echo CRoute::getURI(); ?>#joms-icon-user"/>
</svg>
<a href="<?php echo $event->getGuestLink(
COMMUNITY_EVENT_STATUS_ATTEND
); ?>"><?php $membercount = $event->getMembersCount(COMMUNITY_EVENT_STATUS_ATTEND);
echo JText::sprintf(
(!CStringHelper::isSingular(
$membercount
)) ? 'COM_COMMUNITY_EVENTS_ATTANDEE_COUNT_MANY_NUMBER' : 'COM_COMMUNITY_EVENTS_ATTANDEE_COUNT_NUMBER',
$membercount
); ?></a>
</li>
5. at event detail copy single.php from /components/com_community/templates/jomsocial/layouts/events/ to /templates/[frontend template]/com_community/html/layouts/events/
6 edit it and remove the code at line 253
<li class="full"><a href="<?php echo CRoute::_('index.php?option=com_community&view=events&task=viewguest&eventid=' . $event->id . '&type='.COMMUNITY_EVENT_STATUS_ATTEND )?>"><?php
echo JText::sprintf((CStringHelper::isPlural($eventMembersCount)) ? 'COM_COMMUNITY_EVENTS_ATTANDEE_COUNT_MANY':'COM_COMMUNITY_EVENTS_ATTANDEE_COUNT', $eventMembersCount);
#echo $eventMembersCount > 1 ? JText::_('COM_COMMUNITY_EVENTS_ATTANDEE_COUNT_MANY') . ' <span class="joms-text--light">' . $eventMembersCount . '</span>' : JText::_('COM_COMMUNITY_EVENTS_ATTANDEE_COUNT') . ' <span class="joms-text--light">' . $eventMembersCount . '</span>'
?></a></li>and line 309
<div id="joms-event--attend" class="joms-tab__content">
<div class="joms-module__body">
<?php if($eventMembersCount>0) { ?>
<ul class="joms-list--thumbnail">
<?php foreach($eventMembers as $member) { ?>
<li class="joms-list__item">
<a href="<?php echo CUrlHelper::userLink($member->id); ?>" class="joms-avatar">
<img src="<?php echo $member->getThumbAvatar(); ?>" alt="<?php echo $member->getDisplayName(); ?>" />
</a>
</li>
<?php } ?>
</ul>
<div class="joms-gap"></div>
<a class="joms-button--link" href="<?php echo $handler->getFormattedLink('index.php?option=com_community&view=events&task=viewguest&eventid=' . $event->id . '&type='.COMMUNITY_EVENT_STATUS_ATTEND );?>"><?php echo JText::_('COM_COMMUNITY_VIEW_ALL');?> </a>
<?php } else {
echo JText::_('COM_COMMUNITY_EVENTS_NO_USER_ATTENDING_MESSAGE');
} ?>
</div>
</div>
