Enable sf 'weight_calc_level_in_tf' in speed 4

Encoder performance results averaged over all resolutions are as
follows:

      Instruction Count           BD-Rate Loss(%)
cpu     Reduction(%)      avg.psnr   ssim    vmaf    vmaf_neg
 4         1.58            0.0401   0.0119   0.0346   0.0147

STATS_CHANGED for speed=4

Change-Id: I864d7704a8603531a55b954f44bf8ae68e2788c9

av1/encoder/speed_features.c

diff --git a/av1/encoder/speed_features.c b/av1/encoder/speed_features.c
index 9a2ca59..0ba18c8 100644
--- a/av1/encoder/speed_features.c
+++ b/av1/encoder/speed_features.c
@@ -1336,6 +1336,8 @@
   }
 
   if (speed >= 4) {
+    sf->hl_sf.weight_calc_level_in_tf = 1;
+
     sf->mv_sf.subpel_search_method = SUBPEL_TREE_PRUNED_MORE;
 
     sf->gm_sf.prune_zero_mv_with_sse = 2;
@@ -1394,7 +1396,6 @@
   }
 
   if (speed >= 5) {
-    sf->hl_sf.weight_calc_level_in_tf = 1;
     sf->hl_sf.adjust_num_frames_for_arf_filtering =
         allow_screen_content_tools ? 0 : 2;