arch: Remove exec_domain from remaining archs

Signed-off-by: Richard Weinberger <richard@nod.at>

arch/ia64/include/asm/thread_info.h

@@ -20,7 +20,6 @@
  */
 struct thread_info {
 	struct task_struct *task;	/* XXX not really needed, except for dup_task_struct() */
-	struct exec_domain *exec_domain;/* execution domain */
 	__u32 flags;			/* thread_info flags (see TIF_*) */
 	__u32 cpu;			/* current CPU */
 	__u32 last_cpu;			/* Last CPU thread ran on */
@@ -40,7 +39,6 @@ struct thread_info {
 #define INIT_THREAD_INFO(tsk)			\
 {						\
 	.task		= &tsk,			\
-	.exec_domain	= &default_exec_domain,	\
 	.flags		= 0,			\
 	.cpu		= 0,			\
 	.addr_limit	= KERNEL_DS,		\