Delete row ('1961', '20402') from daily_volatility

ticker_id 1961
day 20402
implied_open 0.1825568404634567
implied_high 0.1889066436100118
implied_low 0.1793819388901792
implied_close 0.1841442912500955
historical_open 0.180969389676818
historical_high 0.180969389676818
historical_low 0.180969389676818
historical_close 0.180969389676818
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