Removing plane_block_{width, height}_log2by4 functions.

Change-Id: I040b82b8e32aee272d10cbb021c7ba1c76343d7a

vp9/common/vp9_blockd.h

@@ -450,16 +450,6 @@ static INLINE int plane_block_height(BLOCK_SIZE_TYPE bsize,
   return 4 << (b_height_log2(bsize) - plane->subsampling_y);
 }
 
-static INLINE int plane_block_width_log2by4(
-    BLOCK_SIZE_TYPE bsize, const struct macroblockd_plane* plane) {
-  return (b_width_log2(bsize) - plane->subsampling_x);
-}
-
-static INLINE int plane_block_height_log2by4(
-    BLOCK_SIZE_TYPE bsize, const struct macroblockd_plane* plane) {
-  return (b_height_log2(bsize) - plane->subsampling_y);
-}
-
 typedef void (*foreach_transformed_block_visitor)(int plane, int block,
                                                   BLOCK_SIZE_TYPE bsize,
                                                   int ss_txfrm_size,

vp9/encoder/vp9_encodemb.c

@@ -459,10 +459,10 @@ void xform_quant(int plane, int block, BLOCK_SIZE_TYPE bsize,
   int16_t *coeff = BLOCK_OFFSET(p->coeff, block, 16);
   int16_t *qcoeff = BLOCK_OFFSET(pd->qcoeff, block, 16);
   int16_t *dqcoeff = BLOCK_OFFSET(pd->dqcoeff, block, 16);
-  const TX_SIZE tx_size = (TX_SIZE)(ss_txfrm_size / 2);
   const int16_t *scan, *iscan;
   uint16_t *eob = &pd->eobs[block];
-  const int bwl = plane_block_width_log2by4(bsize, pd), bw = 1 << bwl;
+  const TX_SIZE tx_size = (TX_SIZE)(ss_txfrm_size / 2);
+  const int bwl = b_width_log2(bsize) - pd->subsampling_x, bw = 1 << bwl;
   const int twl = bwl - tx_size, twmask = (1 << twl) - 1;
   int xoff, yoff;
   int16_t *src_diff;