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/include/shared/as-layout.h b/arch/um/include/shared/as-layout.h
index 86daa54..694c792 100644
--- a/arch/um/include/shared/as-layout.h
+++ b/arch/um/include/shared/as-layout.h
@@ -35,7 +35,7 @@
 
 #ifndef __ASSEMBLY__
 
-#include "sysdep/ptrace.h"
+#include <sysdep/ptrace.h>
 
 struct cpu_task {
 	int pid;