The following edit will remove the SimplePortal version in your copyright. It does not effect any compat functions or alter the admin center.
SMF version: 2.0 series
SP version: 2.3 series
Open ./Sources/Subs-Portal.php
Find:
global $context, $sourcedir, $scripturl, $modSettings, $txt;
global $settings, $options, $boarddir, $maintenance, $sportal_version;
$sportal_version = '2.3.3';
Replace with:
function sportal_init($standalone = false)
{
global $context, $sourcedir, $scripturl, $modSettings, $txt;
global $settings, $options, $boarddir, $maintenance, $sportal_version, $sportal_real_version;
$sportal_version = '';
$sportal_real_version = '2.3.3';
Open ./Sources/PortalAdminMain.php
Find:
function sportal_information($in_admin = true)
{
global $context, $scripturl, $txt, $sourcedir, $sportal_version, $user_profile;
Replace with:
function sportal_information($in_admin = true)
{
global $context, $scripturl, $txt, $sourcedir, $sportal_real_version, $user_profile;
Find:
$context['sp_version'] = $sportal_version;
Replace with:
$context['sp_version'] = $sportal_real_version;
$sportal_version should contain the string of what you want to be displayed (blank if you want to remove it, obviously).
$portal_real_version contains your actual software version, for the admin center to use.