remove: unimplemented function

Author: adamstark

AudioFile.h

@@ -207,7 +207,6 @@ class AudioFile
 
     static inline int32_t fourBytesToInt (const std::vector<uint8_t>& source, int startIndex, Endianness endianness = Endianness::LittleEndian);
     static inline int16_t twoBytesToInt (const std::vector<uint8_t>& source, int startIndex, Endianness endianness = Endianness::LittleEndian);
-    static inline int getIndexOfString (const std::vector<uint8_t>& source, std::string s);
     static inline int getIndexOfChunk (const std::vector<uint8_t>& source, const std::string& chunkHeaderID, int startIndex, Endianness endianness = Endianness::LittleEndian);
 
     //=============================================================