uml: remove sysdep/thread.h

This patch removes thread.h, which turns out not to be needed any more.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/um/include/sysdep-i386/kernel-offsets.h

@@ -17,6 +17,5 @@
 
 void foo(void)
 {
-	OFFSET(HOST_TASK_DEBUGREGS, task_struct, thread.arch.debugregs);
 #include <common-offsets.h>
 }