Delete row ('1953', '20621') from daily_volatility

ticker_id 1953
day 20621
implied_open 0.2730415353018658
implied_high 0.2825662400216983
implied_low 0.2666917321553107
implied_close 0.2730415353018658
historical_open 0.2365301672091744
historical_high 0.2365301672091744
historical_low 0.2365301672091744
historical_close 0.2365301672091744
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