Delete row ('9', '20587') from daily_volatility

ticker_id 9
day 20587
implied_open 0.2476423227156457
implied_high 0.2508172242889232
implied_low 0.2397050687824519
implied_close 0.2397050687824519
historical_open 0.2587544782221169
historical_high 0.2587544782221169
historical_low 0.2587544782221169
historical_close 0.2587544782221169
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