Delete row ('600', '20545') from daily_volatility

ticker_id 600
day 20545
implied_open 0.87944773579787
implied_high 0.9238963578237551
implied_low 0.87944773579787
implied_close 0.9016720468108126
historical_open 0.9429457672634202
historical_high 0.9429457672634202
historical_low 0.9429457672634202
historical_close 0.9429457672634202
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