Added additional settings to control assets prefix.

include/dawn/file/asset.h

@@ -6,8 +6,5 @@
 #pragma once
 #include "../libs.h"
 
-/** Prefix of all asset load methods, may be customizable in future. */
-#define ASSET_PREFIX "assets/"
-
 /** Definition of an asset ready to be buffered */
 typedef FILE assetbuffer_t;