ipc.c: remove unnecesarry #ifdef IPC_64
ipc.c: remove unnecesarry #ifdef IPC_64

* ipc.c (PRINTCTL): Remove #ifdef IPC_64 check as IPC_64 is always
defined at this point.

kapdop/android_external_strace,vrastogi/strace,vrastogi/strace,cuviper/strace,Saruta/strace,Saruta/strace,cuviper/strace,Distrotech/strace,Distrotech/strace,kapdop/android_external_strace,vrastogi/strace,kapdop/android_external_strace,kapdop/android_external_strace,Distrotech/strace,Saruta/strace,cuviper/strace,cuviper/strace,vrastogi/strace,kapdop/android_external_strace,Distrotech/strace,Distrotech/strace,Saruta/strace,vrastogi/strace,Saruta/strace,cuviper/strace