ia64: Remove Linux/x86 exec domain support

As this series removes exec domain support we can
get rid of this hack.
Signed-off-by: Richard Weinberger <richard@nod.at>

arch/ia64/mm/init.c

@@ -692,31 +692,6 @@ int arch_remove_memory(u64 start, u64 size)
 #endif
 #endif
 
-/*
- * Even when CONFIG_IA32_SUPPORT is not enabled it is
- * useful to have the Linux/x86 domain registered to
- * avoid an attempted module load when emulators call
- * personality(PER_LINUX32). This saves several milliseconds
- * on each such call.
- */
-static struct exec_domain ia32_exec_domain;
-
-static int __init
-per_linux32_init(void)
-{
-	ia32_exec_domain.name = "Linux/x86";
-	ia32_exec_domain.handler = NULL;
-	ia32_exec_domain.pers_low = PER_LINUX32;
-	ia32_exec_domain.pers_high = PER_LINUX32;
-	ia32_exec_domain.signal_map = default_exec_domain.signal_map;
-	ia32_exec_domain.signal_invmap = default_exec_domain.signal_invmap;
-	register_exec_domain(&ia32_exec_domain);
-
-	return 0;
-}
-
-__initcall(per_linux32_init);
-
 /**
  * show_mem - give short summary of memory stats
  *