Clean up ext-tx experiment

Remove unnecessary #if statements from the implementation.

Change-Id: I09c2f046aec2c43894f8dcfd99216fdf0a50451d

av1/common/blockd.h

diff --git a/av1/common/blockd.h b/av1/common/blockd.h
index 859986a..3fac8a1 100644
--- a/av1/common/blockd.h
+++ b/av1/common/blockd.h
@@ -822,12 +822,8 @@
 #endif  // CONFIG_EXT_INTRA || CONFIG_FILTER_INTRA
 
 #if CONFIG_EXT_TX
-#if EXT_TX_SIZES == 4
   if (xd->lossless[mbmi->segment_id] || txsize_sqr_map[tx_size] > TX_32X32 ||
       (txsize_sqr_map[tx_size] >= TX_32X32 && !is_inter_block(mbmi)))
-#else
-  if (xd->lossless[mbmi->segment_id] || txsize_sqr_map[tx_size] >= TX_32X32)
-#endif
     return DCT_DCT;
   if (mbmi->sb_type >= BLOCK_8X8 || CONFIG_CB4X4) {
     if (plane_type == PLANE_TYPE_Y) {

av1/common/entropymode.c

diff --git a/av1/common/entropymode.c b/av1/common/entropymode.c
index 8bb8e86..18f9a3a 100644
--- a/av1/common/entropymode.c
+++ b/av1/common/entropymode.c
@@ -1417,9 +1417,7 @@
           { 0 },
           { 0 },
           { 0 },
-#if EXT_TX_SIZES == 4
           { 0 },
-#endif
       },
       {
           { 10, 24, 30, 128, 128, 128, 128, 112, 160, 128, 128, 128, 128, 128,
@@ -1428,26 +1426,17 @@
             128 },
           { 10, 24, 30, 128, 128, 128, 128, 112, 160, 128, 128, 128, 128, 128,
             128 },
-#if EXT_TX_SIZES == 4
           { 10, 24, 30, 128, 128, 128, 128, 112, 160, 128, 128, 128, 128, 128,
             128 },
-#endif
       },
       {
           { 10, 30, 128, 112, 160, 128, 128, 128, 128, 128, 128 },
           { 10, 30, 128, 112, 160, 128, 128, 128, 128, 128, 128 },
           { 10, 30, 128, 112, 160, 128, 128, 128, 128, 128, 128 },
-#if EXT_TX_SIZES == 4
           { 10, 30, 128, 112, 160, 128, 128, 128, 128, 128, 128 },
-#endif
       },
       {
-          { 12 },
-          { 12 },
-          { 12 },
-#if EXT_TX_SIZES == 4
-          { 12 },
-#endif
+          { 12 }, { 12 }, { 12 }, { 12 },
       }
     };
 
@@ -1492,7 +1481,6 @@
                                        { 0 },
                                        { 0 },
                                    },
-#if EXT_TX_SIZES == 4
                                    {
                                        { 0 },
                                        { 0 },
@@ -1505,7 +1493,6 @@
                                        { 0 },
                                        { 0 },
                                    },
-#endif
                                },
                                {
                                    {
@@ -1544,7 +1531,6 @@
                                        { 10, 23, 32, 128, 80, 176 },
                                        { 10, 32, 32, 128, 16, 64 },
                                    },
-#if EXT_TX_SIZES == 4
                                    {
                                        { 8, 224, 32, 128, 64, 128 },
                                        { 10, 32, 32, 128, 16, 192 },
@@ -1557,7 +1543,6 @@
                                        { 10, 23, 32, 128, 80, 176 },
                                        { 10, 32, 32, 128, 16, 64 },
                                    },
-#endif
                                },
                                {
                                    {
@@ -1596,7 +1581,6 @@
                                        { 10, 23, 80, 176 },
                                        { 10, 32, 16, 64 },
                                    },
-#if EXT_TX_SIZES == 4
                                    {
                                        { 8, 224, 64, 128 },
                                        { 10, 32, 16, 192 },
@@ -1609,7 +1593,6 @@
                                        { 10, 23, 80, 176 },
                                        { 10, 32, 16, 64 },
                                    },
-#endif
                                },
                              };
 #else