in the html folder in template files:

<?php if ($this->item->readmore_register) :
        echo JText::_('Register to read more...');
    elseif ($readmore = $this->item->params->get('readmore')) :
        echo $readmore;
    else :
        echo JText::sprintf('Read more', $this->escape($this->item->title));

    endif; ?>
Change this rule:

echo JText::sprintf('Read more', $this->escape($this->item->title));
To:

echo 'Read More';

http://stackoverflow.com/questions/5730435/remove-readmore-article-title-from-joomla

Remove Title from Read More

joomla

PHP