binary_codes_reader.c: drop dead code

Change-Id: If0a074487768e2c31c4e0e7b3ee82c9981cba493

aom_dsp/binary_codes_reader.c

diff --git a/aom_dsp/binary_codes_reader.c b/aom_dsp/binary_codes_reader.c
index 3076709..d05c3ef 100644
--- a/aom_dsp/binary_codes_reader.c
+++ b/aom_dsp/binary_codes_reader.c
@@ -33,17 +33,6 @@
   }
 }
 
-int16_t aom_read_primitive_symmetric_(aom_reader *r,
-                                      unsigned int mag_bits ACCT_STR_PARAM) {
-  if (aom_read_bit(r, ACCT_STR_NAME)) {
-    int s = aom_read_bit(r, ACCT_STR_NAME);
-    int16_t x = aom_read_literal(r, mag_bits, ACCT_STR_NAME) + 1;
-    return (s > 0 ? -x : x);
-  } else {
-    return 0;
-  }
-}
-
 uint16_t aom_read_primitive_quniform_(aom_reader *r,
                                       uint16_t n ACCT_STR_PARAM) {
   if (n <= 1) return 0;
@@ -126,17 +115,6 @@
                                     aom_rb_read_primitive_subexpfin(rb, n, k));
 }
 
-// Decode finite subexponential code that for a symbol v in [-(n-1), n-1] with
-// parameter k based on a reference ref also in [-(n-1), n-1].
-int16_t aom_read_signed_primitive_refsubexpfin_(aom_reader *r, uint16_t n,
-                                                uint16_t k,
-                                                int16_t ref ACCT_STR_PARAM) {
-  ref += n - 1;
-  const uint16_t scaled_n = (n << 1) - 1;
-  return aom_read_primitive_refsubexpfin(r, scaled_n, k, ref, ACCT_STR_NAME) -
-         n + 1;
-}
-
 int16_t aom_rb_read_signed_primitive_refsubexpfin(
     struct aom_read_bit_buffer *rb, uint16_t n, uint16_t k, int16_t ref) {
   ref += n - 1;

aom_dsp/binary_codes_reader.h

diff --git a/aom_dsp/binary_codes_reader.h b/aom_dsp/binary_codes_reader.h
index 48e7683..bb31328 100644
--- a/aom_dsp/binary_codes_reader.h
+++ b/aom_dsp/binary_codes_reader.h
@@ -29,20 +29,12 @@
   aom_read_primitive_subexpfin_(r, n, k ACCT_STR_ARG(ACCT_STR_NAME))
 #define aom_read_primitive_refsubexpfin(r, n, k, ref, ACCT_STR_NAME) \
   aom_read_primitive_refsubexpfin_(r, n, k, ref ACCT_STR_ARG(ACCT_STR_NAME))
-#define aom_read_signed_primitive_refsubexpfin(r, n, k, ref, ACCT_STR_NAME) \
-  aom_read_signed_primitive_refsubexpfin_(r, n, k,                          \
-                                          ref ACCT_STR_ARG(ACCT_STR_NAME))
 
-int16_t aom_read_primitive_symmetric_(aom_reader *r,
-                                      unsigned int mag_bits ACCT_STR_PARAM);
 uint16_t aom_read_primitive_quniform_(aom_reader *r, uint16_t n ACCT_STR_PARAM);
 uint16_t aom_read_primitive_subexpfin_(aom_reader *r, uint16_t n,
                                        uint16_t k ACCT_STR_PARAM);
 uint16_t aom_read_primitive_refsubexpfin_(aom_reader *r, uint16_t n, uint16_t k,
                                           uint16_t ref ACCT_STR_PARAM);
-int16_t aom_read_signed_primitive_refsubexpfin_(aom_reader *r, uint16_t n,
-                                                uint16_t k,
-                                                int16_t ref ACCT_STR_PARAM);
 
 int16_t aom_rb_read_signed_primitive_refsubexpfin(
     struct aom_read_bit_buffer *rb, uint16_t n, uint16_t k, int16_t ref);