combine twn_texture_modes.h into twn_textures_c.h

include/twn_texture_modes.h

@@ -1,16 +0,0 @@
-#ifndef TWN_TEXTURES_MODES_H
-#define TWN_TEXTURES_MODES_H
-
-/* TODO: rename, as it doesn't have to be about textures only, but blending */
-/* TODO: move from public /include/ tree */
-
-/* alpha channel information */
-typedef enum TextureMode {
-    TEXTURE_MODE_OPAQUE,        /* all pixels are solid */
-    TEXTURE_MODE_SEETHROUGH,  	/* some pixels are alpha zero */
-    TEXTURE_MODE_GHOSTLY,       /* arbitrary alpha values */
-    TEXTURE_MODE_COUNT,
-    TEXTURE_MODE_UNKNOWN = -1,  /* a sentinel */
-} TextureMode;
-
-#endif