Delete row ('193', '20397') from daily_volatility

ticker_id 193
day 20397
implied_open 0.7746759838797123
implied_high 0.8064249996124873
implied_low 0.7095905016275231
implied_close 0.7349897142137433
historical_open 0.6635544288149993
historical_high 0.6635544288149993
historical_low 0.6635544288149993
historical_close 0.6635544288149993
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