KANSAS CITY, Mo. — Veteran Matt Duffy sent a group text to Kansas City Royals’ hitters before Monday’s game with a simple message: Don’t panic. It sure seemed like his teammates were listening following KC’s 9-5 home victory over Toronto on Monday night — the Royals’ first win of the season. Duffy said his father had shared a tweet with him earlier in the day about the Royals ranking among the…