Delete row ('635', '20175') from daily_volatility

ticker_id 635
day 20175
implied_open 0.7984877456792935
implied_high 0.9223089070371163
implied_low 0.776263434666351
implied_close 0.8572234247849274
historical_open 1.06994183019452
historical_high 1.06994183019452
historical_low 1.06994183019452
historical_close 1.06994183019452
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