Doc: Remove PostScript print support

PostScript support was removed back in 2011, but not documented then:
34f712e79e97b757b4426e1ffa09e065c9e379a1

Change-Id: Ie818bf5f733422db910efadd57efa0ddabcc5175
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
QNX: Add support for WindowDoesNotAcceptFocus flag

Set SCREEN_PROPERTY_SENSITIVITY to SCREEN_SENSITIVITY_NO_FOCUS of the
screen window when the Qt::WindowDoesNotAcceptFocus window flag is set.

Change-Id: Iac0764a84186c382dcd3f4bdd31dd24ac15df768
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>