uml: vector: Remove unused definitions VECTOR_{WRITE,HEADERS}

Remove definitions of VECTOR_WRITE and VECTOR_HEADERS since no longer used.
Signed-off-by: Carlos Bilbao <carlos.bilbao@amd.com>
Acked-By: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: Richard Weinberger <richard@nod.at>

arch/um/drivers/vector_user.h

@@ -68,8 +68,6 @@ struct vector_fds {
 };
 
 #define VECTOR_READ	1
-#define VECTOR_WRITE	(1 < 1)
-#define VECTOR_HEADERS	(1 < 2)
 
 extern struct arglist *uml_parse_vector_ifspec(char *arg);