s390x: remove compatibility cc field

Remove the now unused cc field that was only required to not break
bisectability.

Signed-off-by: Alexander Graf <agraf@suse.de>

target-s390x/cpu.h

diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
index 125b939..4e5c391 100644
--- a/target-s390x/cpu.h
+++ b/target-s390x/cpu.h
@@ -67,7 +67,6 @@
 
     PSW psw;
 
-    uint32_t cc;
     uint32_t cc_op;
     uint64_t cc_src;
     uint64_t cc_dst;