QtWebkit (and QtWebkit-Examples) were deprecated in Qt 5.5 and will now
be removed from qt5.git in Qt5.6 release

Change-Id: I86e1072141956136fa5e4220cdcdf812492453b3
Reviewed-by: Tuukka Turunen <tuukka.turunen@digia.com>
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>