remove UTIL and JA2 preprocessor definitions (#66)

UTIL is never used, and JA2 is always used. assumption being we'll never make 1.13 for Wizardry 8.

video2.h doesn't exist, which prevented me from deleting it.

Standard Gaming Platform/sgp.h

@@ -6,26 +6,8 @@
 #include "timer.h"
 #include "debug.h"
 
-#if defined( JA2 ) || defined( UTIL )
 #include "video.h"
-#else
-#include "video2.h"
-#endif
 
-#ifndef JA2
-#include "input.h"
-#include "memman.h"
-#include "fileman.h"
-#include "soundman.h"
-#include "pcx.h"
-#include "line.h"
-#include "gameloop.h"
-#include "font.h"
-#include "english.h"
-#include "vobject.h"
-#include "Random.h"
-#include "shading.h"
-#endif
 
 #ifdef __cplusplus
 extern "C" {
@@ -36,13 +18,6 @@ extern CHAR8			gzCommandLine[100];	// Command line given
 extern UINT8			gbPixelDepth;				// GLOBAL RUN-TIME SETTINGS
 extern BOOLEAN		gfDontUseDDBlits;		// GLOBAL FOR USE OF DD BLITTING
 
-#if !defined(JA2) && !defined(UTILS)
-extern BOOLEAN		gfLoadAtStartup;
-extern CHAR8		*gzStringDataOverride;
-extern BOOLEAN		gfUsingBoundsChecker;
-extern BOOLEAN		gfCapturingVideo;
-
-#endif
 
 // function prototypes
 void SGPExit(void);