Remove unused nscgroup field

src/lxc/cgroup.c

@@ -88,7 +88,7 @@ out:
 int lxc_rename_nsgroup(const char *name, struct lxc_handler *handler)
 {
 	char oldname[MAXPATHLEN];
-	char *newname = handler->nsgroup;
+	char newname[MAXPATHLEN];
 	char cgroup[MAXPATHLEN];
 	int ret;
 

src/lxc/start.h

@@ -40,7 +40,6 @@ struct lxc_handler {
 	char *name;
 	lxc_state_t state;
 	int sigfd;
-	char nsgroup[MAXPATHLEN];
 	sigset_t oldmask;
 	struct lxc_conf *conf;
 	struct lxc_operations *ops;