[REF] Move recently added upgrade steps from 5.31.0 to 5.31.alpha1 step

CRM/Upgrade/Incremental/php/FiveThirtyOne.php

@@ -65,15 +65,6 @@ class CRM_Upgrade_Incremental_php_FiveThirtyOne extends CRM_Upgrade_Incremental_
     $this->addTask('Remove Eway Single Currency Payment Processor type if not used or install the new extension for it', 'enableEwaySingleExtension');
     $this->addTask('dev/core#1486 Remove FKs from ACL Cache tables', 'removeFKsFromACLCacheTables');
     $this->addTask('Activate core extension "Greenwich"', 'installGreenwich');
-  }
-
-  /**
-   * Upgrade function.
-   *
-   * @param string $rev
-   */
-  public function upgrade_5_31_0($rev) {
-    $this->addTask(ts('Upgrade DB to %1: SQL', [1 => $rev]), 'runSql', $rev);
     $this->addTask('Add is_non_case_email_skipped column to civicrm_mail_settings', 'addColumn',
       'civicrm_mail_settings', 'is_non_case_email_skipped', "TINYINT DEFAULT 0 NOT NULL COMMENT 'Skip emails which do not have a Case ID or Case hash'");
     $this->addTask('Add is_contact_creation_disabled_if_no_match column to civicrm_mail_settings', 'addColumn',