andychristo on "locating picture in the banner"

Chaps, I didn't want to reopen an old thread, so I thought I will open a new one instead. On this site, I am trying to locate and remove one of the banner pictures specifically this one http://www.andychristodrums.co.uk/wp-content/themes/twentyeleven-child/images/headers/andy_background_1.jpg

I have managed to locate the picture and finally also the function that is handling it (inside the function.php). Now, I would be grateful if somebody can let me know if what I will do is correct. In the function.php

'image1' => array(
			'url' => $url  .'andy_background.jpg',
			'thumbnail_url' => $url .'andy_background_thumb.jpg',
			/* translators: header image description */
			'description' => __( 'Image description', 'twentyeleven-child' )
		),
		'image2' => array(
			'url' => $url .'andy_background_1.jpg',
			'thumbnail_url' => $url .'andy_background_1_thumb.jpg',
			/* translators: header image description */
			'description' => __( 'Image description1', 'twentyeleven-child' )
		),

		'image4' => array(
					'url' => $url .'andy_background_4.jpg',
					'thumbnail_url' => $url .'andy_background_4_thumb.jpg',
					/* translators: header image description */
					'description' => __( 'Image description4', 'twentyeleven-child' )
				),

the offending picture is andy_background_1.jpg so I will remove this block of code:
`'image1' => array(
'url' => $url .'andy_background.jpg',
'thumbnail_url' => $url .'andy_background_thumb.jpg',
/* translators: header image description */
'description' => __( 'Image description', 'twentyeleven-child' )
),`
and then delete the image itself from the headers folder. Is that it?
thanks