Delete row ('211', '20524') from daily_volatility

ticker_id 211
day 20524
implied_open 0.5635450292567578
implied_high 0.6159309052158367
implied_low 0.5587826768968416
implied_close 0.5778320863365066
historical_open 0.6079936512826429
historical_high 0.6079936512826429
historical_low 0.6079936512826429
historical_close 0.6079936512826429
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