Dear sunjeev,
In order to problems, this is default by Joomla, and not setting in back-end. But, when you want to not show in front-end, you can have style
.contentpaneopen_edit {
display: none;
}
or you can remove some lines
<?php if (($this->user->authorize('com_content', 'edit', 'content', 'all') || $this->user->authorize('com_content', 'edit', 'content', 'own')) && !$this->print) : ?>
<div class="contentpaneopen_edit<?php echo $this->escape($this->params->get( 'pageclass_sfx' )); ?>" >
<?php echo JHTML::_('icon.edit', $this->article, $this->params, $this->access); ?>
</div>
<?php endif; ?>
in htmlcom_contentarticledefault.php (lines 13) , htmlcom_contentcategoryblog_item.php (lines 9) , htmlcom_contentfrontpagedefault_item.php (lines 9) , htmlcom_contentsectionblog_item.php (lines 9)