Remove vestiges of old overlay source split

[trunk only]

src/sounds.c

@@ -10,15 +10,8 @@
 # endif
 #endif
 
-#ifdef OVLB
-
 static int FDECL(domonnoise,(struct monst *));
 static int NDECL(dochat);
-
-#endif /* OVLB */
-
-#ifdef OVL0
-
 static int FDECL(mon_in_room, (struct monst *,int));
 
 /* this easily could be a macro, but it might overtax dumb compilers */
@@ -258,9 +251,6 @@ dosounds()
     }
 }
 
-#endif /* OVL0 */
-#ifdef OVLB
-
 static const char * const h_sounds[] = {
     "beep", "boing", "sing", "belche", "creak", "cough", "rattle",
     "ululate", "pop", "jingle", "sniffle", "tinkle", "eep"
@@ -1028,6 +1018,4 @@ const char* msg;
 
 #endif /* USER_SOUNDS */
 
-#endif /* OVLB */
-
 /*sounds.c*/