libeplayer: disable subtitle code

current neutrino is not prepared for this, so comment
it out to fix linking

libeplayer3/include/input.h

@@ -70,8 +70,10 @@ class Input
 		Input();
 		~Input();
 
+#if 0
 		bool ReadSubtitle(const char *filename, const char *format, int pid);
 		bool ReadSubtitles(const char *filename);
+#endif
 		bool Init(const char *filename);
 		bool UpdateTracks();
 		bool Play();