remove posted by admin , date , time

i am using attitue theme in wp 3.5.1
I want to remove
By Webmaster | March 10, 2013 | Workings |

from each and every post
How to remove it

I have google and got to know that you have to edit single.php
therefore, i have pasted the code below . I dont have an experience of working with codes

<?php
/**
 * Displays the single section of the theme.
 *
 * @package Theme Horse
 * @subpackage Attitude
 * @since Attitude 1.0
 */
?>

<?php get_header(); ?>

<?php
	/**
	 * attitude_before_main_container hook
	 */
	do_action( 'attitude_before_main_container' );
?>

<div id="container">
	<?php
		/**
		 * attitude_main_container hook
		 *
		 * HOOKED_FUNCTION_NAME PRIORITY
		 *
		 * attitude_content 10
		 */
		do_action( 'attitude_main_container' );
	?>
</div><!-- #container -->

<?php
	/**
	 * attitude_after_main_container hook
	 */
	do_action( 'attitude_after_main_container' );
?>

<?php get_footer(); ?>

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