feeds: disable the x-wrt feed, it is unmaintained

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39457 3c298f89-4303-0410-b956-a3cf2f4a3e73

feeds.conf.default

 src-git packages git://git.openwrt.org/packages.git
-src-svn xwrt http://x-wrt.googlecode.com/svn/trunk/package
 src-git luci git://nbd.name/luci.git
 src-git routing git://github.com/openwrt-routing/packages.git
 src-git telephony http://feeds.openwrt.nanl.de/openwrt/telephony.git
+#src-svn xwrt http://x-wrt.googlecode.com/svn/trunk/package
 #src-svn phone svn://svn.openwrt.org/openwrt/feeds/phone
 #src-svn efl svn://svn.openwrt.org/openwrt/feeds/efl
 #src-svn xorg svn://svn.openwrt.org/openwrt/feeds/xorg