Remove the av1_inter_mode_tree[] constants.

Change-Id: Id5a9a5d0b2ea98d0354dbe8fa5ed11bd6d02e4c8
diff --git a/av1/common/entropymode.c b/av1/common/entropymode.c
index ac14a10..15c35d4 100644
--- a/av1/common/entropymode.c
+++ b/av1/common/entropymode.c
@@ -1279,11 +1279,6 @@
 };
 #endif  // CONFIG_ALT_INTRA
 
-const aom_tree_index av1_inter_mode_tree[TREE_SIZE(INTER_MODES)] = {
-  -INTER_OFFSET(ZEROMV), 2, -INTER_OFFSET(NEARESTMV), 4, -INTER_OFFSET(NEARMV),
-  -INTER_OFFSET(NEWMV)
-};
-
 #if CONFIG_EXT_INTER
 /* clang-format off */
 #if CONFIG_INTERINTRA
diff --git a/av1/common/entropymode.h b/av1/common/entropymode.h
index 301b3c1..450b1a2 100644
--- a/av1/common/entropymode.h
+++ b/av1/common/entropymode.h
@@ -482,7 +482,6 @@
 #endif  // CONFIG_PALETTE
 
 extern const aom_tree_index av1_intra_mode_tree[TREE_SIZE(INTRA_MODES)];
-extern const aom_tree_index av1_inter_mode_tree[TREE_SIZE(INTER_MODES)];
 extern int av1_intra_mode_ind[INTRA_MODES];
 extern int av1_intra_mode_inv[INTRA_MODES];
 #if CONFIG_EXT_TX