Delete row ('193', '20171') from daily_volatility

ticker_id 193
day 20171
implied_open 0.6841912890413031
implied_high 0.7826132378129059
implied_low 0.5667199308300354
implied_close 0.6921285429744969
historical_open 1.428705707974879
historical_high 1.428705707974879
historical_low 1.428705707974879
historical_close 1.428705707974879
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