Revert "confile: make lxc_get_config() and lxc_get_config_net() alway…

…s return non-NULL"

This reverts commit 674791e.

Our stable queue tool somehow still listed this patch as pending when it
had already been applied earlier.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

src/lxc/confile.c

@@ -305,14 +305,6 @@ static struct lxc_config_net_t unsupported_config_net_key = {
 	clr_config_unsupported_key,
 };
 
-static struct lxc_config_net_t unsupported_config_net_key = {
-	NULL,
-	false,
-	set_config_unsupported_key,
-	get_config_unsupported_key,
-	clr_config_unsupported_key,
-};
-
 struct lxc_config_t *lxc_get_config_exact(const char *key)
 {
 	size_t i;