some cleanup of stale bits

include/extern.h

@@ -2664,7 +2664,6 @@ extern void get_plname_from_file(NHFILE *, char *, boolean) NONNULLARG12;
 #ifdef SELECTSAVED
 extern int restore_menu(winid);
 #endif
-extern void minit(void);
 extern boolean lookup_id_mapping(unsigned, unsigned *) NONNULLARG2;
 extern int validate(NHFILE *, const char *, boolean) NONNULLARG1;
 /* extern void reset_restpref(void); */

include/global.h

@@ -115,16 +115,6 @@ typedef uchar nhsym;
 #endif
 #endif
 
-#if 0
-/* comment out to test effects of each #define -- these will probably
- * disappear eventually
- */
-#ifdef INTERNAL_COMP
-#define RLECOMP  /* run-length compression of levl array - JLee */
-#define ZEROCOMP /* zero-run compression of everything - Olaf Seibert */
-#endif
-#endif
-
 /* #define SPECIALIZATION */ /* do "specialized" version of new topology */
 
 #ifdef BITFIELDS
@@ -359,21 +349,6 @@ struct version_info {
     unsigned long entity_count;  /* # of monsters and objects */
 };
 
-struct savefile_info {
-    unsigned long sfi1; /* compression etc. */
-    unsigned long sfi2; /* miscellaneous */
-    unsigned long sfi3; /* thirdparty */
-};
-#ifdef NHSTDC
-#define SFI1_EXTERNALCOMP (1UL)
-#define SFI1_RLECOMP (1UL << 1)
-#define SFI1_ZEROCOMP (1UL << 2)
-#else
-#define SFI1_EXTERNALCOMP (1L)
-#define SFI1_RLECOMP (1L << 1)
-#define SFI1_ZEROCOMP (1L << 2)
-#endif
-
 /* This is used to store some build-info data that used
    to be present in makedefs-generated header file date.h */