net/kf5-kdav: remove obosolete dependency on qt5-xmlpatterns

Removed upstream in [1].

[1] https://invent.kde.org/frameworks/kdav/-/commit/50b9d54bfa861844ed964d652b544722d9df43e8

net/kf5-kdav/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	kdav
 DISTVERSION=	${KDE_FRAMEWORKS_VERSION}
+PORTREVISION=	1
 PORTEPOCH=	1
 CATEGORIES=	net kde kde-frameworks
 
@@ -9,7 +10,7 @@ COMMENT=	DAV protocol implementation with KJobs
 USES=		cmake compiler:c++11-lib gettext kde:5 qt:5 tar:xz
 USE_KDE=	config coreaddons i18n kio service \
 		ecm:build
-USE_QT=		concurrent core dbus gui network xml xmlpatterns \
+USE_QT=		concurrent core dbus gui network xml \
 		buildtools:build qmake:build testlib:build
 USE_LDCONFIG=	yes