um: get rid of pointless include "..." where include <...> will do

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
diff --git a/arch/um/drivers/daemon.h b/arch/um/drivers/daemon.h
index 6e0e891..c2dd195 100644
--- a/arch/um/drivers/daemon.h
+++ b/arch/um/drivers/daemon.h
@@ -6,7 +6,7 @@
 #ifndef __DAEMON_H__
 #define __DAEMON_H__
 
-#include "net_user.h"
+#include <net_user.h>
 
 #define SWITCH_VERSION 3