mpegaudio: remove #if 0 blocks

Signed-off-by: Mans Rullgard <mans@mansr.com>

libavcodec/mpegaudiodec.c

@@ -247,14 +247,6 @@ static inline int l3_unscale(int value, int exponent)
 
 static int dev_4_3_coefs[DEV_ORDER];
 
-#if 0 /* unused */
-static int pow_mult3[3] = {
-    POW_FIX(1.0),
-    POW_FIX(1.25992104989487316476),
-    POW_FIX(1.58740105196819947474),
-};
-#endif
-
 static av_cold void int_pow_init(void)
 {
     int i, a;
@@ -266,53 +258,6 @@ static av_cold void int_pow_init(void)
     }
 }
 
-#if 0 /* unused, remove? */
-/* return the mantissa and the binary exponent */
-static int int_pow(int i, int *exp_ptr)
-{
-    int e, er, eq, j;
-    int a, a1;
-
-    /* renormalize */
-    a = i;
-    e = POW_FRAC_BITS;
-    while (a < (1 << (POW_FRAC_BITS - 1))) {
-        a = a << 1;
-        e--;
-    }
-    a -= (1 << POW_FRAC_BITS);
-    a1 = 0;
-    for(j = DEV_ORDER - 1; j >= 0; j--)
-        a1 = POW_MULL(a, dev_4_3_coefs[j] + a1);
-    a = (1 << POW_FRAC_BITS) + a1;
-    /* exponent compute (exact) */
-    e = e * 4;
-    er = e % 3;
-    eq = e / 3;
-    a = POW_MULL(a, pow_mult3[er]);
-    while (a >= 2 * POW_FRAC_ONE) {
-        a = a >> 1;
-        eq++;
-    }
-    /* convert to float */
-    while (a < POW_FRAC_ONE) {
-        a = a << 1;
-        eq--;
-    }
-    /* now POW_FRAC_ONE <= a < 2 * POW_FRAC_ONE */
-#if POW_FRAC_BITS > FRAC_BITS
-    a = (a + (1 << (POW_FRAC_BITS - FRAC_BITS - 1))) >> (POW_FRAC_BITS - FRAC_BITS);
-    /* correct overflow */
-    if (a >= 2 * (1 << FRAC_BITS)) {
-        a = a >> 1;
-        eq++;
-    }
-#endif
-    *exp_ptr = eq;
-    return a;
-}
-#endif
-
 static av_cold int decode_init(AVCodecContext * avctx)
 {
     MPADecodeContext *s = avctx->priv_data;