qt override is breaking kde upgrades

[walt <wa1ter@xxxxxxxxxxxxx>]

The DFly override for qt33 is causing compile errors in today's kde
updates:  the qt33 Makefile references the obsolete XFREE_VERSION
variable.

The good news is the fix is trivial:  just delete the qt33 override
because it is no longer needed.  The upstream qt developers have
already included DFly support.  The FreeBSD port works fine on DFly
with no changes.  Give it a try -- just delete the qt33 directory
from /usr/dfports/x11-toolkits and 'portupgrade qt33'.