Fix Unexpected use of above/left in get_tx_size_context
Before CWG-B010:NEW_TRANSFORM_PARTITION, this context model change from C075 is used in both inter and intra. After CWG-B010:NEW_TRANSFORM_PARTITION is in, this context model change from C075 is used only in intra prediction, for inter prediction, it designed a new context model. Thus the gain of txfm size context from C075 is gone. After discussing with SWCs, revert back to original design.
STATS_CHANGED
Fixes #166 (closed)
Edited by Urvang Joshi