cleanup: remove comment from removed switches

#define FIX_1576_LCLD_CRASH_DIFFERENT_CODEC_ISAR_FRAME_SIZE  /* Dolby: float issue 1576: fix for crash in LCLD mode when codec frame size is less than isar frame size */

#define NONBE_FIX_ISSUE_2206_MDCT_STEREO_FIX_2549       /* FhG: Correct scale inconsistency of old_inp_16k_fx buffer scale. */

#define FIX_2585_BIT_ALLOCATION_DIFF                    /* VA : issue 2585, bit allocation different behaviors between float and fixed-point for corner cases */

/* Macros for issue 1966 are independent, phase diff is always BE for EVS_MONO */

/* The changes for F0+thdModification are mainly for IVAS better float compatibility, */

/* for EVS_MONO, all is kept BE. */

#define FIX_BASOP_2592_OVERFLOW                         /* FhG: BASOP #2592: fix overflow in GetF0() */

#define FIX_BASOP_2591_EDGE_DETECT_COMP                 /* FhG: BASOP #2591: Wrong comparison in edge_detect_fx() */

#define FIX_NONBE_2580_USE_LENGTH_NOT_CONSTANT          /* Dolby: fix 2580: use dynamic length denominator for average energy in unclr_calc_corr_features_fx() */