Alter information from hook_hook_info().
$hooks: Information gathered by module_hook_info() from other modules' implementations of hook_hook_info(). Alter this array directly. See hook_hook_info() for information on what this may contain.
function hook_hook_info_alter(&$hooks) {
// Our module wants to completely override the core tokens, so make
// sure the core token hooks are not found.
$hooks['token_info']['group'] = 'mytokens';
$hooks['tokens']['group'] = 'mytokens';
}