Remove unused function
Remove unused function

rizar/attention-lvcsr,nke001/attention-lvcsr,nke001/attention-lvcsr,rizar/attention-lvcsr,rizar/attention-lvcsr,rizar/attention-lvcsr,rizar/attention-lvcsr,nke001/attention-lvcsr,nke001/attention-lvcsr,nke001/attention-lvcsr