m4mjoomla
In order to remove entire article sidebar, try this tweak:
Remove line 201-219:
<div class="col-12 col-md-3 order-2 order-md-1 mt-5 mt-md-0">
<div class="siderbar-article">
<?php echo $this->item->event->beforeDisplayContent; ?>
<div class="social-sharing">
<h4><?php echo Text::_('TPL_SHARE_SOCIAL_LABEL'); ?></h4>
<div class="list-icon">
<div class="addthis_inline_share_toolbox_p9ln"></div>
</div>
</div>
<?php if(JHtml::_('content.prepare', '{loadposition read-next}')) :?>
<div class="read-next">
<?php echo JHtml::_('content.prepare', '{loadposition read-next}'); ?>
</div>
<?php endif ;?>
</div>
</div>
And change the next div tag:
<div class="col-12 col-md-9 order-1 order-md-2">
to:
<div class="col-12">