Revert "some cleanups"

src/ppu.h

@@ -1,18 +1,6 @@
 #ifndef _FCEU_PPU_H
 #define _FCEU_PPU_H
 
-typedef struct {
-    /* PPU Overclocking */
-	int overclock_enabled;		/* 1 : enable, 0 : disable duh! */
-	int skip_7bit_overclocking;	/* 7-bit samples have priority over overclocking */
-	int extrascanlines;
-	int vblankscanlines;
-	int normal_scanlines;		/* 240 : normal, 290 : dendy */
-	int totalscanlines;
-} FCEU_PPU;
-
-extern FCEU_PPU ppu;
-
 void FCEUPPU_Init(void);
 void FCEUPPU_Reset(void);
 void FCEUPPU_Power(void);
@@ -28,8 +16,6 @@ extern void FP_FASTAPASS(1) (*PPU_hook)(uint32 A);
 extern uint8 NTARAM[0x800], *vnapage[4];
 extern uint8 PPUNTARAM;
 extern uint8 PPUCHRRAM;
-extern uint8 PALRAM[0x20];
-extern uint8 SPRAM[0x100];
 
 void FCEUPPU_SaveState(void);
 void FCEUPPU_LoadState(int version);