remove readmore

Hello, sorry my english is very bad.

I need remove the "readmore" but i need when insert <!--more--> in the post.

I need readmore only when insert <!--more--> in the post.

Thanks for your help!!!

this code in the theloop.php

		if (!is_single()&&!is_page()) {
					smtheme_excerpt('echo=1');
					the_content('')
					?><a href='<?php the_permalink(); ?>' class='readmore'><?php echo $SMTheme->_( 'readmore' ); ?></a><?php
				} else {
					the_content('');
										
				}