Get rid of checks for Qt3 types

Get rid of checks for Qt3 types

These types don't exist anymore, so it's pointless to check for them.

Also remove the dead types from uic's type-to-header map.

Change-Id: I7f0af5c337859f3da1c103157a802bbe5372df9f
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>
Reviewed-by: Jonas Gastal <jgastal@profusion.mobi>
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>