ref: df6f6180795bc781ea00b39e49b4b85561e64dc2
parent: 1349e8634ca1be8a128501b74164ae0b523e0ee0
author: Dmitry Kovalev <dkovalev@google.com>
date: Tue May 27 12:24:01 EDT 2014
Removing redundant vp9_zero() call. rd.tx_select_threshes is cleared in encode_frame_internal(). Change-Id: Ie03776a41c585f13b392a9b62d4e91ef26ebeaf0