Remove motion_mode rd breakout speed feature

This feature is less useful with 2-pass inter mode search
and adaptive versions of that. Hence removing.

STATS_CHANGED

Change-Id: I456382fb7a500bb5c550988ba38d73fd512029db

av1/encoder/rdopt.c

diff --git a/av1/encoder/rdopt.c b/av1/encoder/rdopt.c
index 5a6556e..99accb3 100644
--- a/av1/encoder/rdopt.c
+++ b/av1/encoder/rdopt.c
@@ -9591,20 +9591,6 @@
       }
     }
 
-    if (cpi->sf.model_based_motion_mode_rd_breakout && do_tx_search) {
-      int model_rate;
-      int64_t model_dist;
-      model_rd_sb_fn[MODELRD_TYPE_MOTION_MODE_RD](
-          cpi, mbmi->sb_type, x, xd, 0, num_planes - 1, mi_row, mi_col,
-          &model_rate, &model_dist, NULL, NULL, NULL, NULL, NULL);
-      const int64_t est_rd =
-          RDCOST(x->rdmult, rd_stats->rate + model_rate, model_dist);
-      if ((est_rd >> 3) * 6 > ref_best_rd) {
-        mbmi->ref_frame[1] = ref_frame_1;
-        continue;
-      }
-    }
-
     if (!do_tx_search) {
       int64_t curr_sse = -1;
       int est_residue_cost = 0;

av1/encoder/speed_features.c

diff --git a/av1/encoder/speed_features.c b/av1/encoder/speed_features.c
index e3eb193..5794983 100644
--- a/av1/encoder/speed_features.c
+++ b/av1/encoder/speed_features.c
@@ -220,7 +220,6 @@
   sf->use_dist_wtd_comp_flag = DIST_WTD_COMP_SKIP_MV_SEARCH;
   sf->model_based_prune_tx_search_level = 1;
   sf->model_based_post_interp_filter_breakout = 1;
-  sf->model_based_motion_mode_rd_breakout = 1;
 
   // TODO(debargha): Test, tweak and turn on either 1 or 2
   sf->inter_mode_rd_model_estimation = 1;
@@ -444,7 +443,6 @@
   sf->use_dist_wtd_comp_flag = DIST_WTD_COMP_SKIP_MV_SEARCH;
   sf->model_based_prune_tx_search_level = 1;
   sf->model_based_post_interp_filter_breakout = 1;
-  sf->model_based_motion_mode_rd_breakout = 1;
 
   // TODO(debargha): Test, tweak and turn on either 1 or 2
   sf->inter_mode_rd_model_estimation = 0;
@@ -692,7 +690,6 @@
   sf->tx_size_search_lgr_block = 0;
   sf->model_based_prune_tx_search_level = 0;
   sf->model_based_post_interp_filter_breakout = 0;
-  sf->model_based_motion_mode_rd_breakout = 0;
   sf->reduce_inter_modes = 0;
   sf->selective_ref_gm = 1;
   sf->adaptive_motion_search = 0;
@@ -790,9 +787,6 @@
   // Set decoder side speed feature to use less dual sgr modes
   sf->dual_sgr_penalty_level = 0;
 
-  // TODO(angiebird, debargha): Re-evaluate the impact of
-  // inter_mode_rd_model_estimation in conjunction with
-  // model_based_motion_mode_rd_breakout
   sf->inter_mode_rd_model_estimation = 0;
   sf->inter_mode_rd_model_estimation_adaptive = 0;
 

av1/encoder/speed_features.h

diff --git a/av1/encoder/speed_features.h b/av1/encoder/speed_features.h
index 1cc1b82..358f4c9 100644
--- a/av1/encoder/speed_features.h
+++ b/av1/encoder/speed_features.h
@@ -354,11 +354,6 @@
   // 1: use model based rd breakout
   int model_based_post_interp_filter_breakout;
 
-  // Model based breakout in motion_mode_rd
-  // 0: no breakout
-  // 1: use model based rd breakout
-  int model_based_motion_mode_rd_breakout;
-
   // Used if partition_search_type = FIXED_SIZE_PARTITION
   BLOCK_SIZE always_this_block_size;