Merge "No longer use use_lastframe_partitioning speed feature"

vp9/encoder/vp9_speed_features.c

@@ -123,7 +123,6 @@ static void set_good_speed_feature(VP9_COMP *cpi, VP9_COMMON *cm,
     sf->disable_filter_search_var_thresh = 100;
     sf->comp_inter_joint_search_thresh = BLOCK_SIZES;
     sf->auto_min_max_partition_size = CONSTRAIN_NEIGHBORING_MIN_MAX;
-    sf->use_lastframe_partitioning = LAST_FRAME_PARTITION_LOW_MOTION;
     sf->adjust_partitioning_from_last_frame = 1;
 
     if (MIN(cm->width, cm->height) >= 720)