target/s390x: Remove exc argument to mmu_translate_asce

Now that mmu_translate_asce returns the exception instead of
raising it, the argument is unused.

Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20191001171614.8405-9-richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>

target/s390x/mmu_helper.c

@@ -116,7 +116,7 @@ static inline bool read_table_entry(CPUS390XState *env, hwaddr gaddr,
 
 static int mmu_translate_asce(CPUS390XState *env, target_ulong vaddr,
                               uint64_t asc, uint64_t asce, target_ulong *raddr,
-                              int *flags, int rw, bool exc)
+                              int *flags, int rw)
 {
     const bool edat1 = (env->cregs[0] & CR0_EDAT) &&
                        s390_has_feat(S390_FEAT_EDAT);
@@ -423,7 +423,7 @@ int mmu_translate(CPUS390XState *env, target_ulong vaddr, int rw, uint64_t asc,
     }
 
     /* perform the DAT translation */
-    r = mmu_translate_asce(env, vaddr, asc, asce, raddr, flags, rw, exc);
+    r = mmu_translate_asce(env, vaddr, asc, asce, raddr, flags, rw);
     if (unlikely(r)) {
         if (exc) {
             trigger_access_exception(env, r, ilen, tec);