Delete row ('211', '20538') from daily_volatility

ticker_id 211
day 20538
implied_open 0.5841818894830616
implied_high 0.7159403047740782
implied_low 0.568307381616674
implied_close 0.568307381616674
historical_open 0.6556171748818056
historical_high 0.6556171748818056
historical_low 0.6556171748818056
historical_close 0.6556171748818056
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