Delete row ('1992', '20159') from daily_volatility

ticker_id 1992
day 20159
implied_open 0.8492861708517336
implied_high 0.8492861708517336
implied_low 0.6826038382546643
implied_close 0.7556265744400472
historical_open 1.063592027047966
historical_high 1.063592027047966
historical_low 1.063592027047966
historical_close 1.063592027047966
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