x86: sys32_execve PT_DTRACE

The PT_DTRACE flag is meaningless and obsolete.
Don't touch it.
Signed-off-by: NRoland McGrath <roland@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/ia32/sys_ia32.c

@@ -780,11 +780,6 @@ asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv,
 	if (IS_ERR(filename))
 		return error;
 	error = compat_do_execve(filename, argv, envp, regs);
-	if (error == 0) {
-		task_lock(current);
-		current->ptrace &= ~PT_DTRACE;
-		task_unlock(current);
-	}
 	putname(filename);
 	return error;
 }