Remove the av1_inter_mode_tree[] constants.

Change-Id: Id5a9a5d0b2ea98d0354dbe8fa5ed11bd6d02e4c8

av1/common/entropymode.c

@@ -1279,11 +1279,6 @@ const aom_tree_index av1_intra_mode_tree[TREE_SIZE(INTRA_MODES)] = {
 };
 #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

av1/common/entropymode.h

@@ -482,7 +482,6 @@ extern const aom_prob av1_default_palette_uv_color_index_prob
 #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