Code snippet that can be used to remove title block for a certain page in Drupal 8.
/**
* Implements hook_block_view_alter().
*/
function mymodule_block_view_alter(array &$build, \Drupal\Core\Block\BlockPluginInterface $block) {
if ($block->getBaseId() === 'page_title_block') {
// Remove the title block from the front page.
$is_front = \Drupal::service('path.matcher')->isFrontPage();
if ($is_front) {
$build['#access'] = FALSE;
}
}
}