materio-base-d7/sites/all/modules/contrib/admin/nodeformcols/nodeformcols.install

<?php

/**
 * @file
 * Install and update hooks
 */

/**
 * Implementation of hook_install().
 */
function nodeformcols_install() {
  // We need our hook_theme() to run after node.module's hook_theme().
  db_update('system')
    ->fields(array('weight' => 1))
    ->condition('name', 'nodeformcols')
    ->condition('type', 'module')
    ->execute();
}

/**
 * Implementation of hook_uninstall().
 */
function nodeformcols_uninstall() {
  $res = db_select('variable')
    ->fields('variable', array('name'))
    ->condition('name', 'nodeformscols_field_placements_%', 'LIKE')
    ->execute();
  foreach ($res as $v) {
    variable_del($v->name);
  }
}