Delete row ('600', '20705') from daily_volatility

ticker_id 600
day 20705
implied_open 0.7461018697202146
implied_high 0.7556265744400472
implied_low 0.7349897142137433
implied_close 0.7349897142137433
historical_open 1.063592027047966
historical_high 1.063592027047966
historical_low 1.063592027047966
historical_close 1.063592027047966
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