Remove unused arrays in entropymode.h

Change-Id: I7f2c0bfc12451710622161bd52ff689e642d1e52
diff --git a/av1/common/entropymode.h b/av1/common/entropymode.h
index 205fd97..bfb2a70 100644
--- a/av1/common/entropymode.h
+++ b/av1/common/entropymode.h
@@ -576,10 +576,6 @@
 extern const aom_tree_index av1_intra_filter_tree[TREE_SIZE(INTRA_FILTERS)];
 #endif  // CONFIG_EXT_INTRA && CONFIG_INTRA_INTERP
 #if CONFIG_EXT_TX
-extern const aom_tree_index av1_ext_tx_inter_tree[EXT_TX_SETS_INTER]
-                                                 [TREE_SIZE(TX_TYPES)];
-extern const aom_tree_index av1_ext_tx_intra_tree[EXT_TX_SETS_INTRA]
-                                                 [TREE_SIZE(TX_TYPES)];
 extern const aom_tree_index av1_ext_tx_tree[EXT_TX_SET_TYPES]
                                            [TREE_SIZE(TX_TYPES)];
 #else