remove leftover and unimplemented proto FLAC__file_decoder_process_remaining_frames()
remove leftover and unimplemented proto FLAC__file_decoder_process_remaining_frames()

fredericgermain/flac,kode54/flac,kode54/flac,Distrotech/flac,LordJZ/libflac,LordJZ/libflac,fredericgermain/flac,waitman/flac,waitman/flac,fredericgermain/flac,waitman/flac,Distrotech/flac,Distrotech/flac,LordJZ/libflac,fredericgermain/flac,kode54/flac,LordJZ/libflac,kode54/flac,waitman/flac,waitman/flac,Distrotech/flac