Removing redundant vp9_zero() call.

rd.tx_select_threshes is cleared in encode_frame_internal().

Change-Id: Ie03776a41c585f13b392a9b62d4e91ef26ebeaf0

vp9/encoder/vp9_encoder.c

diff --git a/vp9/encoder/vp9_encoder.c b/vp9/encoder/vp9_encoder.c
index 03bf4b0..2ce5483 100644
--- a/vp9/encoder/vp9_encoder.c
+++ b/vp9/encoder/vp9_encoder.c
@@ -2115,8 +2115,6 @@
 
   vp9_clear_system_state();
 
-  vp9_zero(cpi->rd.tx_select_threshes);
-
 #if CONFIG_VP9_POSTPROC
   if (cpi->oxcf.noise_sensitivity > 0) {
     int l = 0;