diff --git a/lib/experimental/html/class-wp-html-attribute-sourcer.php b/lib/experimental/html/class-wp-html-attribute-sourcer.php
index 27a78aecffd77..ea178cbf2eafd 100644
--- a/lib/experimental/html/class-wp-html-attribute-sourcer.php
+++ b/lib/experimental/html/class-wp-html-attribute-sourcer.php
@@ -236,127 +236,6 @@ public static function select( $selectors, $html ) {
 		return false;
 	}
 
-	public static function select_draft1( $selectors, $html ) {
-		$tags = new WP_HTML_Processor( $html );
-		if ( ! $tags->next_tag() ) {
-			return null;
-		}
-
-		$tags->set_bookmark( 'start' );
-
-		foreach ( $selectors as $s ) {
-			$tags->seek( 'start' );
-			$max = 100;
-			while ( --$max > 0 ) {
-				$next = $s;
-
-				// This label is probably where some stack-level data should reside.
-				next:
-				// Find the next starting point
-				while ( null === self::select_match( $tags, $next ) && $tags->next_tag() ) {
-					continue;
-				}
-
-				// We're out of possible starting points
-				if ( null === self::select_match( $tags, $next ) ) {
-					continue 2;
-				}
-
-				// No further selectors, then bingo!
-				if ( ! isset( $next['then'] ) ) {
-					return $tags;
-				}
-
-				$next = $next['then'];
-
-				// Adjacent sibling must be the immediately-following element.
-				if ( '+' === $next['combinator'] ) {
-					var_dump( [
-						'msg' => "Processing adjacent sibling",
-						'html' => $html,
-						'tag' => $tags->get_tag(),
-						'selector' => $next
-					] );
-					$state = $tags->new_state();
-					while ( $tags->balanced_next( $state ) ) {
-						continue;
-					}
-
-					$tags->next_tag();
-					if ( null === self::select_match( $tags, $next ) ) {
-						continue;
-					}
-
-					if ( isset( $next['then'] ) ) {
-						goto next;
-					}
-
-					// @TODO: Recurse here so we can handle more than one level.
-					return $tags;
-				}
-
-				// Child must be one level into current tag.
-				if ( '>' === $next['combinator'] ) {
-					var_dump( [
-						'msg' => "Processing child",
-						'html' => $html,
-						'tag' => $tags->get_tag(),
-						'selector' => $next
-					] );
-					$state = $tags->new_state();
-					$state->match_depth = 1;
-					while ( $tags->balanced_next( $state ) ) {
-						if ( null === self::select_match( $tags, $next ) ) {
-							continue;
-						}
-
-						if ( isset( $next['then'] ) ) {
-							goto next;
-						}
-
-						// @TODO: Recurse here so we can handle more than one level.
-						return $tags;
-					}
-
-					continue;
-				}
-
-				// Descendant can be anywhere inside current tag.
-				if ( ' ' === $next['combinator'] ) {
-					var_dump( [
-						'msg' => "Processing descendant",
-						'html' => $html,
-						'tag' => $tags->get_tag(),
-						'selector' => $next
-					] );
-					$state = $tags->new_state();
-					while ( $tags->balanced_next( $state ) ) {
-						if ( null === self::select_match( $tags, $next ) ) {
-							continue;
-						}
-
-						if ( isset( $next['then'] ) ) {
-							goto next;
-						}
-
-						// @TODO: Recurse here so we can handle more than one level.
-						return $tags;
-					}
-
-					continue;
-				}
-
-				// General sibling must be anything at current level.
-				if ( '~' === $next['combinator'] ) {
-					// @TODO: Support this.
-					return null;
-				}
-			}
-		}
-
-		return null;
-	}
-
 	public static function parse_definition( $definition ) {
 		if ( empty( $definition['source'] ) ) {
 			return 'not-sourced';