blockd,decodeframe.c: remove unused tu_num_y var

Change-Id: Idd4a7ff49c594e8d1c7cb057967fe7bf75770dfb
diff --git a/av1/common/blockd.c b/av1/common/blockd.c
index 3b434be..65842dd 100644
--- a/av1/common/blockd.c
+++ b/av1/common/blockd.c
@@ -86,7 +86,6 @@
   const int tu_num_h_y = (max_4x4_h_y + tx_sz_y - 1) / tx_sz_y;
   const int tu_num_w_c = (max_4x4_w_c + tx_sz_c - 1) / tx_sz_c;
   const int tu_num_h_c = (max_4x4_h_c + tx_sz_c - 1) / tx_sz_c;
-  const int tu_num_y = tu_num_w_y * tu_num_h_y;
   const int tu_num_c = tu_num_w_c * tu_num_h_c;
 
   int tu_idx_c = 0;
diff --git a/av1/decoder/decodeframe.c b/av1/decoder/decodeframe.c
index 6aec03e..880ee83 100644
--- a/av1/decoder/decodeframe.c
+++ b/av1/decoder/decodeframe.c
@@ -1555,7 +1555,6 @@
     const int tu_num_h_y = (max_4x4_h_y + tx_sz_y - 1) / tx_sz_y;
     const int tu_num_w_c = (max_4x4_w_c + tx_sz_c - 1) / tx_sz_c;
     const int tu_num_h_c = (max_4x4_h_c + tx_sz_c - 1) / tx_sz_c;
-    const int tu_num_y = tu_num_w_y * tu_num_h_y;
     const int tu_num_c = tu_num_w_c * tu_num_h_c;
 
     if (!is_inter_block(mbmi)) {