remove_subtree
(void) remove_subtree(fruh);
(void) remove_subtree(chdh);
static int remove_subtree(picl_nodehdl_t parh);
(void) remove_subtree(frutreeh);
if (remove_subtree(chdh) != PICL_SUCCESS)
remove_subtree(child, subtree);
remove_subtree(child, subtree);