Delete row ('268', '20153') from daily_volatility

ticker_id 268
day 20153
implied_open 0.6302179622955855
implied_high 0.6476799209486118
implied_low 0.6032312989227266
implied_close 0.6302179622955855
historical_open 0.7159403047740782
historical_high 0.7159403047740782
historical_low 0.7159403047740782
historical_close 0.7159403047740782
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