seccomp: Remove check for CRIS host

As per the deprecation notice in commit c7bbef4023:

  The CRIS architecture was pulled from Linux in 4.17 and
  the compiler is no longer packaged in any distro [...].

It is now unlikely QEMU is build on CRIS host.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Message-ID: <20240904143603.52934-16-philmd@linaro.org>

system/qemu-seccomp.c

@@ -47,10 +47,10 @@ const struct scmp_arg_cmp sched_setscheduler_arg[] = {
 };
 
 /*
- * See 'NOTES' in 'man 2 clone' - s390 & cross have 'flags' in
+ * See 'NOTES' in 'man 2 clone' - s390 has 'flags' in
  *  different position to other architectures
  */
-#if defined(HOST_S390X) || defined(HOST_S390) || defined(HOST_CRIS)
+#if defined(HOST_S390X) || defined(HOST_S390)
 #define CLONE_FLAGS_ARG 1
 #else
 #define CLONE_FLAGS_ARG 0