Fixed PSP trying to load entirely into memory

src/duskpsp/asset/assetpbp.h

@@ -28,13 +28,7 @@ typedef struct {
 } assetpbpheader_t;
 
 typedef struct {
-  FILE *pbpFile;
   assetpbpheader_t pbpHeader;
-
-  // Whole dusk.dsk (PSAR) blob, kept alive for as long as ASSET.zip/
-  // ASSET.zipStored are open since they're non-owning windows into it (see
-  // assetDskOpenFromBuffer). Freed in assetDisposePBP.
-  uint8_t *dskData;
 } assetpbp_t;
 
 /**