ospfd: VTY strings cleanup

Several bits of text can be local or are unused.
diff --git a/ospfd/ospf_vty.c b/ospfd/ospf_vty.c
index e144c29..adc822a 100644
--- a/ospfd/ospf_vty.c
+++ b/ospfd/ospf_vty.c
@@ -3511,7 +3511,7 @@
   return 0;
 }
 
-const char *show_database_desc[] =
+static const char *show_database_desc[] =
 {
   "unknown",
   "Router Link States",
@@ -3529,10 +3529,7 @@
 #endif /* HAVE_OPAQUE_LSA */
 };
 
-#define SHOW_OSPF_COMMON_HEADER \
-  "Link ID         ADV Router      Age  Seq#       CkSum"
-
-const char *show_database_header[] =
+static const char *show_database_header[] =
 {
   "",
   "Link ID         ADV Router      Age  Seq#       CkSum  Link count",
@@ -3550,16 +3547,6 @@
 #endif /* HAVE_OPAQUE_LSA */
 };
 
-const char *show_lsa_flags[] =
-{
-  "Self-originated",
-  "Checked",
-  "Received",
-  "Approved",
-  "Discard",
-  "Translated",
-};
-
 static void
 show_ip_ospf_database_header (struct vty *vty, struct ospf_lsa *lsa)
 {