Remove vestiges of old overlay source split

[trunk only]

src/light.c

@@ -38,8 +38,6 @@
  * across saves and restores.
  */
 
-#ifdef OVL3
-
 /* flags */
 #define LSF_SHOW	0x1		/* display the light source */
 #define LSF_NEEDS_FIXUP	0x2		/* need oid fixup */
@@ -621,6 +619,4 @@ wiz_light_sources()
 
 #endif /* WIZARD */
 
-#endif /* OVL3 */
-
 /*light.c*/