Obsolete condition in GameClient::Update

[xezon]

void GameClient::Update()
{
...
        if (!is_paused) {
        ...

        if (static_cast<unsigned int>(g_theWriteableGlobalData->m_frameToJumpTo) <= g_theGameLogic->Get_Frame()
            || g_theGameLogic->Get_Frame() == 0) {
            if (!is_paused) {
                g_theParticleSystemManager->Set_Player_Index(player_index);
            }
...

If testing !is_paused twice even though it is not changed in between. Can remove.