gvfs: remove --disable-gconf

gconf support has been dropped since 1.7.0:
https://gitlab.gnome.org/GNOME/gvfs/commit/e22dbb2aeadd3d45a93e702046bc9dc247368f4b

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/gvfs/gvfs.mk

@@ -23,7 +23,6 @@ GVFS_CONF_OPTS = \
 	--disable-admin \
 	--disable-bash-completion \
 	--disable-cdda \
-	--disable-gconf \
 	--disable-gcr \
 	--disable-gdu \
 	--disable-goa \