Delete row ('9', '20276') from daily_volatility

ticker_id 9
day 20276
implied_open 0.2762164368751432
implied_high 0.3047905510346408
implied_low 0.2762164368751432
implied_close 0.3016156494613633
historical_open 0.2587544782221169
historical_high 0.2587544782221169
historical_low 0.2587544782221169
historical_close 0.2587544782221169
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