diff --git a/lib/compat/wordpress-5.9/template-parts.php b/lib/compat/wordpress-5.9/template-parts.php
index e25a1f80014cb..1d84d00afbe48 100644
--- a/lib/compat/wordpress-5.9/template-parts.php
+++ b/lib/compat/wordpress-5.9/template-parts.php
@@ -100,36 +100,6 @@ function gutenberg_register_wp_template_part_area_taxonomy() {
 	}
 	add_action( 'init', 'gutenberg_register_wp_template_part_area_taxonomy' );
 
-	/**
-	 * Fixes the label of the 'wp_template_part' admin menu entry.
-	 */
-	function gutenberg_fix_template_part_admin_menu_entry() {
-		if ( ! gutenberg_supports_block_templates() ) {
-			return;
-		}
-
-		global $submenu;
-		if ( ! isset( $submenu['themes.php'] ) ) {
-			return;
-		}
-		$post_type = get_post_type_object( 'wp_template_part' );
-		if ( ! $post_type ) {
-			return;
-		}
-		foreach ( $submenu['themes.php'] as $key => $submenu_entry ) {
-			if ( $post_type->labels->all_items === $submenu['themes.php'][ $key ][0] ) {
-				$submenu['themes.php'][ $key ][0] = $post_type->labels->menu_name; // phpcs:ignore WordPress.WP.GlobalVariablesOverride
-				break;
-			}
-		}
-	}
-	add_action( 'admin_menu', 'gutenberg_fix_template_part_admin_menu_entry' );
-
-	// Customize the `wp_template` admin list.
-	add_filter( 'manage_wp_template_part_posts_columns', 'gutenberg_templates_lists_custom_columns' );
-	add_action( 'manage_wp_template_part_posts_custom_column', 'gutenberg_render_templates_lists_custom_column', 10, 2 );
-	add_filter( 'views_edit-wp_template_part', 'gutenberg_filter_templates_edit_views' );
-
 	/**
 	 * Sets a custom slug when creating auto-draft template parts.
 	 * This is only needed for auto-drafts created by the regular WP editor.
diff --git a/lib/compat/wordpress-5.9/templates.php b/lib/compat/wordpress-5.9/templates.php
index 819e6474abfd5..93b8c40a8c0cf 100644
--- a/lib/compat/wordpress-5.9/templates.php
+++ b/lib/compat/wordpress-5.9/templates.php
@@ -127,35 +127,6 @@ function gutenberg_grant_template_caps( array $allcaps ) {
 	}
 	add_filter( 'user_has_cap', 'gutenberg_grant_template_caps' );
 
-	/**
-	 * Fixes the label of the 'wp_template' admin menu entry.
-	 */
-	function gutenberg_fix_template_admin_menu_entry() {
-		if ( ! gutenberg_supports_block_templates() ) {
-			return;
-		}
-		global $submenu;
-		if ( ! isset( $submenu['themes.php'] ) ) {
-			return;
-		}
-		$post_type = get_post_type_object( 'wp_template' );
-		if ( ! $post_type ) {
-			return;
-		}
-		foreach ( $submenu['themes.php'] as $key => $submenu_entry ) {
-			if ( $post_type->labels->all_items === $submenu['themes.php'][ $key ][0] ) {
-				$submenu['themes.php'][ $key ][0] = $post_type->labels->menu_name; // phpcs:ignore WordPress.WP.GlobalVariablesOverride
-				break;
-			}
-		}
-	}
-	add_action( 'admin_menu', 'gutenberg_fix_template_admin_menu_entry' );
-
-	// Customize the `wp_template` admin list.
-	add_filter( 'manage_wp_template_posts_columns', 'gutenberg_templates_lists_custom_columns' );
-	add_action( 'manage_wp_template_posts_custom_column', 'gutenberg_render_templates_lists_custom_column', 10, 2 );
-	add_filter( 'views_edit-wp_template', 'gutenberg_filter_templates_edit_views' );
-
 	/**
 	 * Sets a custom slug when creating auto-draft templates.
 	 * This is only needed for auto-drafts created by the regular WP editor.
diff --git a/lib/full-site-editing/templates-utils.php b/lib/full-site-editing/templates-utils.php
deleted file mode 100644
index 9eeb046a7c2e5..0000000000000
--- a/lib/full-site-editing/templates-utils.php
+++ /dev/null
@@ -1,93 +0,0 @@
-<?php
-/**
- * Templates and template parts utilities.
- *
- * @package gutenberg
- */
-
-/**
- * Filters the admin list columns to add those relevant to templates and template parts.
- *
- * @param array $columns Columns to display.
- * @return array Filtered $columns.
- */
-function gutenberg_templates_lists_custom_columns( array $columns ) {
-	$columns['description'] = __( 'Description', 'gutenberg' );
-	$columns['theme']       = __( 'Theme', 'gutenberg' );
-	if ( isset( $columns['date'] ) ) {
-		unset( $columns['date'] );
-	}
-	return $columns;
-}
-
-/**
- * Renders content for the templates and template parts admin list custom columns.
- *
- * @param string $column_name Column name to render.
- * @param int    $post_id     Post ID.
- */
-function gutenberg_render_templates_lists_custom_column( $column_name, $post_id ) {
-	if ( 'description' === $column_name && has_excerpt( $post_id ) ) {
-		the_excerpt( $post_id );
-		return;
-	}
-
-	if ( 'theme' === $column_name ) {
-		$terms = get_the_terms( $post_id, 'wp_theme' );
-		if ( empty( $terms ) || is_wp_error( $terms ) ) {
-			return;
-		}
-		$themes = array();
-		foreach ( $terms as $term ) {
-			$themes[] = esc_html( wp_get_theme( $term->slug ) );
-		}
-		echo implode( '<br />', $themes );
-		return;
-	}
-}
-
-/**
- * Adds the auto-draft view to the templates and template parts admin lists.
- *
- * @param array $views The edit views to filter.
- */
-function gutenberg_filter_templates_edit_views( $views ) {
-	$post_type          = get_current_screen()->post_type;
-	$url                = add_query_arg(
-		array(
-			'post_type'   => $post_type,
-			'post_status' => 'auto-draft',
-		),
-		'edit.php'
-	);
-	$is_auto_draft_view = isset( $_REQUEST['post_status'] ) && 'auto-draft' === $_REQUEST['post_status'];
-	$class_html         = $is_auto_draft_view ? ' class="current"' : '';
-	$aria_current       = $is_auto_draft_view ? ' aria-current="page"' : '';
-	$post_count         = wp_count_posts( $post_type, 'readable' );
-	$label              = sprintf(
-		// The auto-draft status doesn't have localized labels.
-		translate_nooped_plural(
-			/* translators: %s: Number of auto-draft posts. */
-			_nx_noop(
-				'Auto-Draft <span class="count">(%s)</span>',
-				'Auto-Drafts <span class="count">(%s)</span>',
-				'Post status',
-				'gutenberg'
-			),
-			$post_count->{'auto-draft'}
-		),
-		number_format_i18n( $post_count->{'auto-draft'} )
-	);
-
-	$auto_draft_view = sprintf(
-		'<a href="%s"%s%s>%s</a>',
-		esc_url( $url ),
-		$class_html,
-		$aria_current,
-		$label
-	);
-
-	array_splice( $views, 1, 0, array( 'auto-draft' => $auto_draft_view ) );
-
-	return $views;
-}
diff --git a/lib/load.php b/lib/load.php
index f49a7a1c27709..7a781ebe53560 100644
--- a/lib/load.php
+++ b/lib/load.php
@@ -109,7 +109,6 @@ function gutenberg_is_experiment_enabled( $name ) {
 require __DIR__ . '/full-site-editing/full-site-editing.php';
 require __DIR__ . '/full-site-editing/block-templates.php';
 require __DIR__ . '/full-site-editing/default-template-types.php';
-require __DIR__ . '/full-site-editing/templates-utils.php';
 require __DIR__ . '/full-site-editing/page-templates.php';
 require __DIR__ . '/full-site-editing/template-loader.php';
 require __DIR__ . '/full-site-editing/edit-site-page.php';