Prune MV search in RT mode

Change-Id: I2a43aad34b6c955084bf957340a2256f13df477d
diff --git a/av1/encoder/speed_features.c b/av1/encoder/speed_features.c
index 1a63f8a..450331b 100644
--- a/av1/encoder/speed_features.c
+++ b/av1/encoder/speed_features.c
@@ -446,7 +446,7 @@
   // TODO(debargha): Test, tweak and turn on either 1 or 2
   sf->inter_mode_rd_model_estimation = 0;
   sf->inter_mode_rd_model_estimation_adaptive = 0;
-  sf->prune_mode_search_simple_translation = 0;
+  sf->prune_mode_search_simple_translation = 1;
   sf->two_loop_comp_search = 0;
 
   sf->prune_ref_frame_for_rect_partitions = !boosted;