cleanup: remove more old CDrom cruft from the code

now that the CDromEjectionErrorMessageBoxCallBack is no longer referenced

Utils/Utilities.cpp

@@ -13,8 +13,6 @@
 	#include "Sys Globals.h"
 
 
-extern BOOLEAN GetCDromDriveLetter( STR8	pString );
-
 BOOLEAN PerformTimeLimitedCheck();
 
 // WANNE: Given a string, replaces all instances of "oldpiece" with "newpiece"
@@ -332,16 +330,6 @@ void HandleLimitedNumExecutions( )
 }
 
 
-SGPFILENAME	gCheckFilenames[] =
-{
-	"DATA\\INTRO.SLF",
-	"DATA\\LOADSCREENS.SLF",
-	"DATA\\MAPS.SLF",
-	"DATA\\NPC_SPEECH.SLF",
-	"DATA\\SPEECH.SLF",
-};
-
-
 UINT32 gCheckFileMinSizes[] =
 {
 	68000000,