KDE4: Drop Qt 4.9 support
KDE4: Drop Qt 4.9 support

I don't think there will ever be any 4.9 release, so drop all the
unused code.

Change-Id: I4b72de96e6064240582cd83d4e45547096a2efb0

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core