Destroying last array element using unset

<?php
			$terms = apply_filters( 'taxonomy-images-get-terms', '' , array(
			'taxonomy'     => 'tutors',
			) );
			if ( !empty( $terms ) ) {
				print '<ul>';
					foreach( (array) $terms as $term ) {
					print '<li><a href="' . esc_url( get_term_link( $term, $term->taxonomy ) ) . '">' . wp_get_attachment_image( $term->image_id, 'thumbnail' ) . '</li>';
					}
					unset($term);

				print '</ul>';
			}

		?>