help_block_view_help_block_alter

help_block_view_help_block_alter(array &$build, BlockPluginInterface $block)

function help_block_view_help_block_alter(array &$build, BlockPluginInterface $block) {
  // Assume that most users do not need or want to perform contextual actions on
  // the help block, so don't needlessly draw attention to it.
  unset($build['#contextual_links']);
}