Delete row ('193', '20131') from daily_volatility

ticker_id 193
day 20131
implied_open 0.9508830211966139
implied_high 0.9715198814229177
implied_low 0.8683355802913987
implied_close 0.9461206688366977
historical_open 0.6953034445477744
historical_high 0.6953034445477744
historical_low 0.6953034445477744
historical_close 0.6953034445477744
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