Remove "Archives" from title when using WooThemes Canvas and the Testimonials by WooThemes plugin

functions.php

function new_testimonial_title( $new_title ) {
	// Make sure we limit this to the Testimonials post type
    	if ( 'testimonial' == get_post_type() ) {
		    $post_type_object = get_post_type_object( get_query_var( 'post_type' ) );
		    $title = $post_type_object->labels->name;
    		return $title;
	}
}
add_filter( 'get_the_archive_title', 'new_testimonial_title' );