Remove screen content restriction in txfm feature

Removed screen content restriction in txfm_rd_gate_level feature.
This change had no impact on encoding speed and quality of screen
content encoding. This applied to speed 3, 4, and 5.

BUG=aomedia:2711

Change-Id: Id080220e7d18375ccab65f134eb7ec1897fe0d17

av1/encoder/speed_features.c

diff --git a/av1/encoder/speed_features.c b/av1/encoder/speed_features.c
index ca14157..661baf8 100644
--- a/av1/encoder/speed_features.c
+++ b/av1/encoder/speed_features.c
@@ -480,9 +480,8 @@
     if (cpi->oxcf.comp_type_cfg.enable_smooth_interintra)
       sf->inter_sf.disable_smooth_interintra = boosted ? 0 : 1;
     sf->inter_sf.reuse_compound_type_decision = 1;
-    sf->inter_sf.txfm_rd_gate_level = (boosted || allow_screen_content_tools)
-                                          ? 0
-                                          : (is_boosted_arf2_bwd_type ? 1 : 2);
+    sf->inter_sf.txfm_rd_gate_level =
+        boosted ? 0 : (is_boosted_arf2_bwd_type ? 1 : 2);
 
     sf->intra_sf.prune_palette_search_level = 2;
 
@@ -529,8 +528,7 @@
     sf->inter_sf.adaptive_mode_search = 1;
     sf->inter_sf.alt_ref_search_fp = 1;
     sf->inter_sf.prune_ref_mv_idx_search = 1;
-    sf->inter_sf.txfm_rd_gate_level =
-        (boosted || allow_screen_content_tools) ? 0 : 3;
+    sf->inter_sf.txfm_rd_gate_level = boosted ? 0 : 3;
 
     sf->inter_sf.prune_inter_modes_based_on_tpl = boosted ? 0 : 2;
     sf->inter_sf.prune_compound_using_neighbors = 2;
@@ -606,8 +604,7 @@
     sf->inter_sf.disable_interinter_wedge = 1;
     sf->inter_sf.disable_obmc = 1;
     sf->inter_sf.disable_onesided_comp = 1;
-    sf->inter_sf.txfm_rd_gate_level =
-        (boosted || allow_screen_content_tools) ? 0 : 4;
+    sf->inter_sf.txfm_rd_gate_level = boosted ? 0 : 4;
     sf->inter_sf.prune_inter_modes_if_skippable = 1;
 
     sf->lpf_sf.lpf_pick = LPF_PICK_FROM_FULL_IMAGE_NON_DUAL;