Delete row ('268', '20133') from daily_volatility

ticker_id 268
day 20133
implied_open 0.5270336611640665
implied_high 0.5444956198170927
implied_low 0.5206838580175115
implied_close 0.5222713088041502
historical_open 0.6587920764550831
historical_high 0.6587920764550831
historical_low 0.6587920764550831
historical_close 0.6587920764550831
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