Delete row ('543', '20621') from daily_volatility

ticker_id 543
day 20621
implied_open 0.7651512791598797
implied_high 0.7921379425327385
implied_low 0.7619763775866022
implied_close 0.7842006885995447
historical_open 0.847698720065095
historical_high 0.847698720065095
historical_low 0.847698720065095
historical_close 0.847698720065095
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