diff --git a/CRM/Upgrade/Incremental/General.php b/CRM/Upgrade/Incremental/General.php
index 646b2b59056f..8a367694fcd2 100644
--- a/CRM/Upgrade/Incremental/General.php
+++ b/CRM/Upgrade/Incremental/General.php
@@ -39,8 +39,6 @@ class CRM_Upgrade_Incremental_General {
 
   /**
    * The minimum PHP version required to install Civi.
-   *
-   * @see install/index.php
    */
   const MIN_INSTALL_PHP_VER = '7.4.0';
 
@@ -53,8 +51,6 @@ class CRM_Upgrade_Incremental_General {
 
   /**
    * The minimum MySQL version required to install Civi.
-   *
-   * @see install/index.php
    */
   const MIN_INSTALL_MYSQL_VER = '5.7';
 
diff --git a/setup/src/Setup/DrupalUtil.php b/setup/src/Setup/DrupalUtil.php
index 20afedcfedac..82a6a74a478b 100644
--- a/setup/src/Setup/DrupalUtil.php
+++ b/setup/src/Setup/DrupalUtil.php
@@ -26,49 +26,7 @@ public static function getDrupalSiteDir($cmsPath) {
       throw new \Exception('Cannot detect path under Drupal "sites/".');
       // The old 'install/index.php' system duplicated the conf_path() logic so that it could work pre-boot.
       // With civicrm-setup, the CMS should always be booted first, so we should never go down this path.
-      // For the moment, the code is kept below in case it turns out we do need this for some reason.
     }
-
-    /*
-    static $siteDir = '';
-
-    if ($siteDir) {
-    return $siteDir;
-    }
-
-    // The SCRIPT_FILENAME check was copied over from the 'install/index.php' system.
-    // It probably doesn't make sense in the context of civicrm-setup b/c we don't know what the SCRIPT will be
-    // and instead rely on $model inputs.
-
-    $sites = DIRECTORY_SEPARATOR . 'sites' . DIRECTORY_SEPARATOR;
-    $modules = DIRECTORY_SEPARATOR . 'modules' . DIRECTORY_SEPARATOR;
-    preg_match("/" . preg_quote($sites, DIRECTORY_SEPARATOR) .
-    "([\-a-zA-Z0-9_.]+)" .
-    preg_quote($modules, DIRECTORY_SEPARATOR) . "/",
-    $_SERVER['SCRIPT_FILENAME'], $matches
-    );
-    $siteDir = $matches[1] ?? 'default';
-
-    if (strtolower($siteDir) == 'all') {
-    // For this case - use drupal's way of finding out multi-site directory
-    $uri = explode(DIRECTORY_SEPARATOR, $_SERVER['SCRIPT_FILENAME']);
-    $server = explode('.', implode('.', array_reverse(explode(':', rtrim($_SERVER['HTTP_HOST'], '.')))));
-    for ($i = count($uri) - 1; $i > 0; $i--) {
-    for ($j = count($server); $j > 0; $j--) {
-    $dir = implode('.', array_slice($server, -$j)) . implode('.', array_slice($uri, 0, $i));
-    if (file_exists($cmsPath . DIRECTORY_SEPARATOR .
-    'sites' . DIRECTORY_SEPARATOR . $dir
-    )) {
-    $siteDir = $dir;
-    return $siteDir;
-    }
-    }
-    }
-    $siteDir = 'default';
-    }
-
-    return $siteDir;
-     */
   }
 
   /**