The S390CcwMachineClass::max_threads field was only used by the
s390-ccw-virtio-7.1 machine, which got removed. Remove it
as now unused, simplifying the s390_init_cpus() method.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 include/hw/s390x/s390-virtio-ccw.h | 3 ---
 hw/s390x/s390-virtio-ccw.c         | 7 ++-----
 2 files changed, 2 insertions(+), 8 deletions(-)

diff --git a/include/hw/s390x/s390-virtio-ccw.h b/include/hw/s390x/s390-virtio-ccw.h
index 526078a4e2b..db804db33c3 100644
--- a/include/hw/s390x/s390-virtio-ccw.h
+++ b/include/hw/s390x/s390-virtio-ccw.h
@@ -49,11 +49,8 @@ static inline uint64_t s390_get_memory_limit(S390CcwMachineState *s390ms)
 void s390_handle_ptf(S390CPU *cpu, uint8_t r1, uintptr_t ra);
 
 struct S390CcwMachineClass {
-    /*< private >*/
     MachineClass parent_class;
 
-    /*< public >*/
-    int max_threads;
     bool use_cpi;
 };
 
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index cf09b5c46e6..390d427dc41 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -75,12 +75,10 @@ out:
 static void s390_init_cpus(MachineState *machine)
 {
     MachineClass *mc = MACHINE_GET_CLASS(machine);
-    S390CcwMachineClass *s390mc = S390_CCW_MACHINE_CLASS(mc);
     int i;
 
-    if (machine->smp.threads > s390mc->max_threads) {
-        error_report("S390 does not support more than %d threads.",
-                     s390mc->max_threads);
+    if (machine->smp.threads > 1) {
+        error_report("S390 does not support more than 1 thread.");
         exit(1);
     }
 
@@ -779,7 +777,6 @@ static void ccw_machine_class_init(ObjectClass *oc, const void *data)
     S390CcwMachineClass *s390mc = S390_CCW_MACHINE_CLASS(mc);
     DumpSKeysInterface *dsi = DUMP_SKEYS_INTERFACE_CLASS(oc);
 
-    s390mc->max_threads = 1;
     s390mc->use_cpi = true;
     mc->reset = s390_machine_reset;
     mc->block_default_type = IF_VIRTIO;
-- 
2.51.0