diff --git a/docs/generate.php b/docs/generate.php
deleted file mode 100644
index 0a0602404a6ab7..00000000000000
--- a/docs/generate.php
+++ /dev/null
@@ -1,131 +0,0 @@
-<?php
-/**
- * Usage: `cd gutenberg/docs && php generate.php`
- * PHP 7.1+ recommended
- */
-
-/**
- * Get the markdown title from the first h1 tag, e.g. `# text`
- *
- * @param string $contents
- *
- * @return string
- */
-function getTitle(string $contents = '')
-{
-	// Attempt to extract a title
-	if (preg_match('/^#\s(.+)/', $contents, $matches)) {
-		$title = $matches[1];
-	}
-
-	return $title ?? null;
-}
-
-/**
- * Get a slug from the given file path
- *
- * @param string $filePath
- *
- * @return string
- */
-function getSlug(string $filePath)
-{
-	// Get the file path
-	$path = __DIR__ . '/../' . $filePath;
-
-	// Get the markdown file name
-	$fileName = basename($path, '.md');
-
-	// Get the appropriate file path
-	return ($fileName === 'README') ? basename(dirname($path)) : $fileName;
-}
-
-/**
- * Get the "parent" setting. The parent a docs-relative path to the
- * containing folder (or null, if it is a top-level item)
- *
- * @param string $filePath
- *
- * @return string
- */
-function getParent(string $filePath)
-{
-	// Sanitises the path string
-	$path = str_replace(
-		[
-			__DIR__ . '/../docs/',
-			'.md',
-			'/readme',
-			'/README',
-		],
-		'',
-		$filePath
-	);
-
-	// If a slash exists in the path...
-	if (stripos($path, '/')) {
-		// Explode the path into path segments
-		$segments = explode('/', $path);
-
-		// Pop the last item off the array of segments
-		array_pop($segments);
-
-		// Implode it again and use it as the $parent
-		$parent = implode('/', $segments);
-	}
-
-	return $parent ?? null;
-}
-
-/**
- * Process a table-of-contents array into a manifest file
- *
- * @param array $level
- *
- * @return array
- */
-function process(array $level)
-{
-	$manifest = [];
-
-	foreach ($level as $i => $child) {
-		foreach ($child as $file => $children) {
-			// Build an absolute path to the file
-			$path = __DIR__ . '/../' . $file;
-
-			// Append to the manifest
-			$manifest[] = [
-				'title'           => getTitle(file_get_contents($path)),
-				'slug'            => getSlug($file),
-				'markdown_source' => sprintf('https://raw.githubusercontent.com/WordPress/gutenberg/master/%s', $file),
-				'parent'          => getParent($path),
-			];
-
-			// Run the process for children items
-			if (!empty($children) && is_array($children)) {
-				$additions = process($children);
-
-				// Merge the children into the containing manifest
-				$manifest = array_merge($manifest, $additions);
-			}
-
-			if (is_string($children)) {
-				// @todo
-				// The TOC.json format includes tokens that could be replaced
-				// in the future, for easily embedding auto-generated content
-				// into the overall manifest.
-			}
-		}
-	}
-
-	return $manifest;
-}
-
-// Decode the TOC JSON
-$contents = json_decode(file_get_contents(__DIR__ . '/toc.json'), true);
-
-// Process the contents
-$response = process($contents);
-
-// Push out to root-manifest.json
-file_put_contents(__DIR__ . '/root-manifest.json', json_encode($response, JSON_PRETTY_PRINT));