x86: get rid of pt_regs argument in vm86/vm86old

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

arch/x86/um/sys_call_table_32.c

@@ -24,9 +24,6 @@
 
 #define old_mmap sys_old_mmap
 
-#define ptregs_vm86old sys_vm86old
-#define ptregs_vm86 sys_vm86
-
 #define __SYSCALL_I386(nr, sym, compat) extern asmlinkage void sym(void) ;
 #include <asm/syscalls_32.h>