Delete row ('193', '20657') from daily_volatility

ticker_id 193
day 20657
implied_open 0.8746853834379538
implied_high 0.911196751530645
implied_low 0.8334116629853461
implied_close 0.8572234247849274
historical_open 0.6651418796016381
historical_high 0.6651418796016381
historical_low 0.6651418796016381
historical_close 0.6651418796016381
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