Hello William,
Ah, if you are looking at removing them, you need to edit the theme file in /components/com_easysocial/themes/wireframe/groups/category.item.php and remove the codes below,
			<div class="es-widget">
				<div class="es-widget-head">
					<div class="pull-left widget-title"><?php echo JText::_( 'COM_EASYSOCIAL_GROUPS_RANDOM_GROUPS' );?></div>
				</div>
				<div class="es-widget-body">
					<?php if( $groups ){ ?>
					<ul class="widget-list fd-nav fd-nav-stacked random-groups">
						<?php foreach( $groups as $group ){ ?>
						<li>
							<img src="<?php echo $group->getAvatar();?>" class="pull-left mr-10 es-avatar" title="<?php echo $this->html( 'string.escape' , $group->getName() );?>" />
							<a href="<?php echo FRoute::groups( array( 'layout' => 'item' , 'id' => $group->getAlias() ) );?>"><?php echo $group->getName(); ?></a>
							<div class="fd-small group-meta">
								<i class="ies-users"></i> <?php echo JText::sprintf( Foundry::string()->computeNoun( 'COM_EASYSOCIAL_GROUPS_MEMBERS' , $group->getTotalMembers() ) , $group->getTotalMembers() );?>
							</div>
						</li>
						<?php } ?>
					</ul>
					<?php } else { ?>
					<div class="fd-small">
						<?php echo JText::_( 'COM_EASYSOCIAL_GROUPS_NO_GROUPS_YET' ); ?>
					</div>
					<?php } ?>
				</div>
			</div>