really do not apply the obsolete libvisio-0.0.25.patch

sigh, how this survived the conflict resolution?

Change-Id: I65117ba28cac28419d6873af5620a3df17654318

libvisio/UnpackedTarball_visio.mk

@@ -12,9 +12,4 @@ $(eval $(call gb_UnpackedTarball_UnpackedTarball,visio))
 $(eval $(call gb_UnpackedTarball_set_tarball,visio,$(VISIO_TARBALL)))
 
 
-
-$(eval $(call gb_UnpackedTarball_add_patches,visio,\
-       libvisio/libvisio-0.0.25.patch \
-))
-
 # vim: set noet sw=4 ts=4: