Remove a piece of old Qt code from this Makefile.
Remove a piece of old Qt code from this Makefile.

traff/winpty,rprichard/winpty,peters/winpty,peters/winpty,peters/winpty,peters/winpty,dscho/winpty,fracting/winpty,dscho/winpty,dscho/winpty,fracting/winpty,traff/winpty,fracting/winpty,rprichard/winpty,traff/winpty,fracting/winpty,traff/winpty,dscho/winpty,rprichard/winpty,rprichard/winpty