Remove leftover switches

#define FADE_TO_ZERO_FOR_TOO_LONG_FRAMELOSS

/*#define FIX_I1_113*/                                  /* under review : MCT bit distribution optimization for SBA high bitrates*/

#define SPAR_SCALING_HARMONIZATION                      /* Issue 80: Changes to harmonize scaling in spar */

#define FIX_I98_HANDLES_TO_NULL                         /* Issue 98: do the setting of all handles to NULL in one place */

#define FIX_I102_SWB_TBE_SWITCH                         /* Issue 102: avoid IO->SWB switching code for IVAS, generate SHB ACB mem with lerp in case of switch */

#define FIX_DIRAC_CHANNELS                              /* Issue 71: lower number of DirAC analysis channels */

#define HARMONIZE_SBA_NCHAN_TRANSPORT                   /* harmonize setting of number of transport channels in SBA */