ohmu/third/drupal/mustikas11/cleanup_seven_blocks.php

<?php
// Kustuta D7 "seven" admin teema blokid, mis migreerusid valesti
// claro (admin) teema content regioni ja põhjustavad SQL vigu.
use Drupal\block\Entity\Block;

$ids = [
  'seven_user_new',
  'seven_user_online',
  'seven_comment_recent',
  'seven_search_form',
  'seven_system_main',
  'seven_user_login',
];

foreach ($ids as $id) {
  $block = Block::load($id);
  if ($block) {
    $block->delete();
    echo "kustutatud: $id\n";
  } else {
    echo "skip (puudub): $id\n";
  }
}
echo "done\n";