How to get rid of the post and page metadata

How do I get rid of the post and page metadata so as to provide a clean website? The full metadata I want to remove is below the title that has the following

TITLE

April 9, 2013 Uncategorized No comments | Edit

Hi!

To remove this data you have to delete following text from the theloop.php located in the directory of the theme :

if (!is_page()) {?><p class='post-meta'>
            
	<span class='post-date'><?php echo get_the_date(); ?></span>,
                
	Posted in &nbsp;<?php the_category(', ');
                
	if(comments_open( get_the_ID() ))  {
		?>&nbsp;Comments:&nbsp;<span class='post-comments'><?php comments_popup_link( $SMTheme->_( 'noresponses' ), $SMTheme->_( 'oneresponse' ), $SMTheme->_( 'multiresponse' ) ); ?></span>
	<?php }
	edit_post_link( $SMTheme->_( 'edit' ), '     |     <span class="edit-link">', '</span>' );
	?>
</p><?php }

Hello sorry can i ask you if i can put the name author in this string? what i have to do please?