Delete row ('268', '20655') from daily_volatility

ticker_id 268
day 20655
implied_open 0.5206838580175115
implied_high 0.5206838580175115
implied_low 0.5063968009377626
implied_close 0.5079842517244014
historical_open 0.5571952261102028
historical_high 0.5571952261102028
historical_low 0.5571952261102028
historical_close 0.5571952261102028
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