remove CONFIG_UTS_NS and CONFIG_IPC_NS

CONFIG_UTS_NS and CONFIG_IPC_NS have very little value as they only
deactivate the unshare of the uts and ipc namespaces and do not improve
performance.

Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Acked-by: "Serge E. Hallyn" <serue@us.ibm.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/ipc/sem.c b/ipc/sem.c
index 9964b22..89bfdff 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -121,7 +121,7 @@
 #define sc_semopm	sem_ctls[2]
 #define sc_semmni	sem_ctls[3]
 
-static void __ipc_init __sem_init_ns(struct ipc_namespace *ns, struct ipc_ids *ids)
+static void __sem_init_ns(struct ipc_namespace *ns, struct ipc_ids *ids)
 {
 	ns->ids[IPC_SEM_IDS] = ids;
 	ns->sc_semmsl = SEMMSL;
@@ -132,7 +132,6 @@
 	ipc_init_ids(ids, ns->sc_semmni);
 }
 
-#ifdef CONFIG_IPC_NS
 int sem_init_ns(struct ipc_namespace *ns)
 {
 	struct ipc_ids *ids;
@@ -164,7 +163,6 @@
 	kfree(ns->ids[IPC_SEM_IDS]);
 	ns->ids[IPC_SEM_IDS] = NULL;
 }
-#endif
 
 void __init sem_init (void)
 {