rtc: Remove old/unneeded comment.

Change-Id: I665b80564975844d4392f0eb14bd132c728f92b8
diff --git a/av1/encoder/speed_features.c b/av1/encoder/speed_features.c
index 374ea4e..fe03c9e 100644
--- a/av1/encoder/speed_features.c
+++ b/av1/encoder/speed_features.c
@@ -1662,10 +1662,6 @@
     sf->rt_sf.use_rtc_tf = 0;
 }
 
-// TODO(kyslov): now this is very similar to
-// set_good_speed_features_framesize_independent
-// except it sets non-rd flag on speed 8. This function will likely
-// be modified in the future with RT-specific speed features.
 static void set_rt_speed_features_framesize_independent(AV1_COMP *cpi,
                                                         SPEED_FEATURES *sf,
                                                         int speed) {