QtPrintSupport: remove advanced tab from UNIX print properties dialog

QtPrintSupport: remove advanced tab from UNIX print properties dialog

The Advanced tab shows CUPS options and duplicates some of the settings
in Page tab. These duplicate settings cannot be kept in synchronization
and thus the Advanced tab causes confusion which settings are used.

Remove the Advanced tab because the same settings are either available
in Page tab or can be configured in system printer settings.

Change-Id: I2dc2bf8b3b84dd19f24b2e6c1c9539c925d5d725
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>