Delete row ('770', '20734') from daily_volatility

ticker_id 770
day 20734
implied_open 0.7619763775866022
implied_high 0.795312844106016
implied_low 0.742926968146937
implied_close 0.7857881393861835
historical_open 0.5254462103774277
historical_high 0.5254462103774277
historical_low 0.5254462103774277
historical_close 0.5254462103774277
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