diff --git a/arch/um/include/misc_constants.h b/arch/um/include/misc_constants.h
deleted file mode 100644
index 989bc08de36e5fe1b10cbc9ca32cb42e7ca3c2a1..0000000000000000000000000000000000000000
--- a/arch/um/include/misc_constants.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef __MISC_CONSTANT_H_
-#define __MISC_CONSTANT_H_
-
-#include <user_constants.h>
-
-#endif
diff --git a/arch/um/include/signal_kern.h b/arch/um/include/signal_kern.h
deleted file mode 100644
index aeb5d5ab1dfdaf5a210908edcc50d8c628ef1130..0000000000000000000000000000000000000000
--- a/arch/um/include/signal_kern.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* 
- * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __SIGNAL_KERN_H__
-#define __SIGNAL_KERN_H__
-
-extern int have_signals(void *t);
-
-#endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/include/skas/mode-skas.h b/arch/um/include/skas/mode-skas.h
deleted file mode 100644
index e065feb000df7dce9302c94a0887500a15d1faf3..0000000000000000000000000000000000000000
--- a/arch/um/include/skas/mode-skas.h
+++ /dev/null
@@ -1,11 +0,0 @@
-/*
- * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{linux.intel,addtoit}.com)
- * Licensed under the GPL
- */
-
-#ifndef __MODE_SKAS_H__
-#define __MODE_SKAS_H__
-
-extern void kill_off_processes_skas(void);
-
-#endif