Delete row ('635', '20210') from daily_volatility

ticker_id 635
day 20210
implied_open 0.9413583164767814
implied_high 0.9826320369293889
implied_low 0.7842006885995447
implied_close 0.9238963578237551
historical_open 1.209637499418731
historical_high 1.209637499418731
historical_low 1.209637499418731
historical_close 1.209637499418731
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