Reinstate a speed feature turned off inadvertently

About 1% speed-up in speed 1, with small loss in lowres
and a small gain in midres,

Change-Id: Id8bd486b353229d1da6c5fe07ce7fee229c7ef91

av1/encoder/speed_features.c

diff --git a/av1/encoder/speed_features.c b/av1/encoder/speed_features.c
index c375ef8..8e99887 100644
--- a/av1/encoder/speed_features.c
+++ b/av1/encoder/speed_features.c
@@ -225,7 +225,6 @@
     sf->tx_type_search.skip_tx_search = 1;
     sf->tx_type_search.ml_tx_split_thresh = 40;
     sf->model_based_prune_tx_search_level = 0;
-    sf->model_based_post_interp_filter_breakout = 0;
     // TODO(angiebird): Re-evaluate the impact of inter_mode_rd_model_estimation
     // on speed 1
     sf->inter_mode_rd_model_estimation = 0;