diff --git a/av1/encoder/dwt.c b/av1/encoder/dwt.c
index 5dfbcb6..2fab99d 100644
--- a/av1/encoder/dwt.c
+++ b/av1/encoder/dwt.c
@@ -114,7 +114,7 @@
   dyadic_analyze_53_uint8_input(4, 8, 8, input, stride, output, 8, 2, hbd);
 }
 
-int av1_haar_ac_sad(const tran_low_t *output, int bw, int bh, int stride) {
+static int haar_ac_sad(const tran_low_t *output, int bw, int bh, int stride) {
   int acsad = 0;
 
   for (int r = 0; r < bh; ++r)
@@ -124,35 +124,12 @@
   return acsad;
 }
 
-uint64_t av1_dct_ac_sad(tran_low_t *output, int bw, int bh, int stride) {
-  uint64_t acsad = 0;
-
-  for (int r = 0; r < bh; ++r)
-    for (int c = 0; c < bw; ++c) {
-      if (r > 0 || c > 0) acsad += abs(output[r * stride + c]);
-    }
-
-  return acsad;
-}
-
-uint32_t av1_variance(uint8_t *input, int bw, int bh, int stride) {
-  int sum = 0;
-  uint32_t sse = 0;
-
-  for (int r = 0; r < bh; ++r)
-    for (int c = 0; c < bw; ++c) {
-      sum += input[r * stride + c];
-      sse += input[r * stride + c] * input[r * stride + c];
-    }
-  return sse - (uint32_t)(((int64_t)sum * sum) / (bw * bh));
-}
-
 static int haar_ac_sad_8x8_uint8_input(const uint8_t *input, int stride,
                                        int hbd) {
   tran_low_t output[64];
 
   av1_fdwt8x8_uint8_input_c(input, output, stride, hbd);
-  return av1_haar_ac_sad(output, 8, 8, 8);
+  return haar_ac_sad(output, 8, 8, 8);
 }
 
 int64_t av1_haar_ac_sad_mxn_uint8_input(const uint8_t *input, int stride,