Uninstall of buddylist module

Adding the following lines at the end of .install file will allow the module to be properly uninstalled

/**
* Implementation of hook_uninstall().
*/
function buddylist_uninstall() {
db_query('DROP TABLE {buddylist}');
db_query('DROP TABLE {buddylist_buddy_group}');
db_query('DROP TABLE {buddylist_groups}');
db_query('DROP TABLE {buddylist_pending_requests}');
}