Delete row ('2387', '20510') from daily_volatility

ticker_id 2387
day 20510
implied_open 0.7222901079206332
implied_high 0.7349897142137433
implied_low 0.7095905016275231
implied_close 0.7143528539874394
historical_open 0.788963040959461
historical_high 0.788963040959461
historical_low 0.788963040959461
historical_close 0.788963040959461
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