Remove defunct BIOS and rawio options

They were for DOS.

dat/opthelp

@@ -7,7 +7,6 @@ autoautoopen       walking into a door attempts to open it        [TRUE]
 autopickup     automatically pick up objects you move over        [TRUE]
 autoquiver     when firing with an empty quiver, select some
                suitable inventory weapon to fill the quiver       [FALSE]
-BIOS           allow the use of IBM ROM BIOS calls                [FALSE]
 block_forget_map disable amnesia map forgetting                   [TRUE]
 cmdassist      give help for errors on direction & other commands [TRUE]
 confirm        ask before hitting tame or peaceful monsters       [TRUE]
@@ -44,7 +43,6 @@ quiver_fired   when using the f (fire) command and no ammunition
                is quivered, prompt for ammunition to quiver, then 
                fire it.                                           [TRUE]
 qwertz_movement replace the y key with z                          [FALSE]
-rawio          allow the use of raw I/O                           [FALSE]
 rest_on_space  count the space bar as a rest character            [FALSE]
 safe_pet       prevent you from (knowingly) attacking your pet(s) [TRUE]
 showborn       show numbers of created monsters after the number

src/options.c

@@ -44,7 +44,6 @@ static struct Bool_Opt
 	{"autopickup", &flags.pickup, TRUE, SET_IN_GAME},
 	{"apexception_regex", &iflags.ape_regex, FALSE,  SET_IN_FILE},
 	{"autoquiver", &flags.autoquiver, FALSE, SET_IN_GAME},
-	{"BIOS", (boolean *)0, FALSE, SET_IN_FILE},
 	{"botl_updates", &iflags.botl_updates, TRUE, SET_IN_GAME},
 	{"bones", (boolean *)&iflags.bones, TRUE, SET_IN_GAME},
 #ifdef INSURANCE
@@ -172,7 +171,6 @@ static struct Bool_Opt
 	{"quick_m_abilities", &iflags.quick_m_abilities, TRUE, SET_IN_GAME },
 	{"quiver_fired", &iflags.quiver_fired, TRUE, SET_IN_GAME},
 	{"qwertz_movement", &iflags.qwertz_movement, FALSE, SET_IN_GAME},
-	{"rawio", (boolean *)0, FALSE, SET_IN_FILE},
 	{"rest_on_space", &flags.rest_on_space, FALSE, SET_IN_GAME},
 	{"safe_pet", &flags.safe_dog, TRUE, SET_IN_GAME},
 #ifdef WIZARD

util/makedefs.c

@@ -549,11 +549,6 @@ static const char *build_opts[] = {
 #ifdef REINCARNATION
 		"rogue level",
 #endif
-#ifdef NO_TERMS
-# ifdef SCREEN_BIOS
-		"screen control via BIOS",
-# endif
-#endif
 #ifdef SEDUCE
 		"seduction",
 #endif