diff --git a/av1/common/txb_common.h b/av1/common/txb_common.h
index c7be4a1..40fcffc 100644
--- a/av1/common/txb_common.h
+++ b/av1/common/txb_common.h
@@ -78,71 +78,6 @@
   return idx + ((idx >> bwl) << TX_PAD_HOR_LOG2);
 }
 
-static INLINE int get_base_ctx_from_count_mag(int row, int col, int count,
-                                              int sig_mag) {
-  const int ctx = base_level_count_to_index[count];
-  int ctx_idx = -1;
-
-  if (row == 0 && col == 0) {
-    if (sig_mag >= 2) return 0;
-
-    if (sig_mag == 1) {
-      if (count >= 2)
-        ctx_idx = 1;
-      else
-        ctx_idx = 2;
-
-      return ctx_idx;
-    }
-
-    ctx_idx = 3 + ctx;
-    assert(ctx_idx <= 6);
-    return ctx_idx;
-  } else if (row == 0) {
-    if (sig_mag >= 2) return 6;
-    if (sig_mag == 1) {
-      if (count >= 2)
-        ctx_idx = 7;
-      else
-        ctx_idx = 8;
-      return ctx_idx;
-    }
-
-    ctx_idx = 9 + ctx;
-    assert(ctx_idx <= 11);
-    return ctx_idx;
-  } else if (col == 0) {
-    if (sig_mag >= 2) return 12;
-    if (sig_mag == 1) {
-      if (count >= 2)
-        ctx_idx = 13;
-      else
-        ctx_idx = 14;
-
-      return ctx_idx;
-    }
-
-    ctx_idx = 15 + ctx;
-    assert(ctx_idx <= 17);
-    // TODO(angiebird): turn this on once the optimization is finalized
-    // assert(ctx_idx < 28);
-  } else {
-    if (sig_mag >= 2) return 18;
-    if (sig_mag == 1) {
-      if (count >= 2)
-        ctx_idx = 19;
-      else
-        ctx_idx = 20;
-      return ctx_idx;
-    }
-
-    ctx_idx = 21 + ctx;
-
-    assert(ctx_idx <= 24);
-  }
-  return ctx_idx;
-}
-
 static INLINE int get_br_ctx_2d(const uint8_t *const levels,
                                 const int c,  // raster order
                                 const int bwl) {