function MYMODULE_NAME_menu_alter(&$items) {
  $items['node/%node/view']['type'] = MENU_CALLBACK;
  $items['node/%node/edit']['type'] = MENU_CALLBACK;
}

function MYMODULE_NAME_menu_alter(&$items) {
  foreach ($items as $key => $value) {
    if ($items[$key]['type'] == MENU_LOCAL_TASK) {
      $items[$key]['type'] = MENU_CALLBACK;
    }
  }
}