libgsmhr1/dec_func.c: rm unused static functions In the original code, sp_dec.c held two kinds of functions: those needed only as part of the decoder, and those used by both decoder and encoder engines. In this library, we have moved the latter class of functions to dec_func.c module. Almost all static functions from the original sp_dec.c, with the exception of aToRc(), are needed only on sp_dec.c side of the new divide - remove them from dec_func.c, where they became dead code.

/*
 * This header file declares the interface to our writer function for
 * hexadecimal RTP frame sequence files in TW-TS-005 format.  It is
 * a simple function that emits an array of bytes as a hexadecimal line.
 */

void emit_hex_frame(FILE *outf, const uint8_t *frame, unsigned nbytes);