Drop the Coach-hero medical disclaimer

The new-chat hero carried a standing self-description line. Remove that
instance; the greeting and composer stay. The MedicalDisclaimer component
and its insights/labs/medications placements are unchanged.

src/components/insights/coach-panel/coach-hero.tsx

@@ -2,7 +2,6 @@
 
 import { Sparkles } from "lucide-react";
 
-import { MedicalDisclaimer } from "@/components/common/medical-disclaimer";
 import { cn } from "@/lib/utils";
 import { useTranslations } from "@/lib/i18n/context";
 
@@ -122,15 +121,6 @@ export function CoachHero({ composer, scopeHint }: CoachHeroProps) {
             {scopeHint}
           </div>
         ) : null}
-
-        {/* v1.25 — the Coach standing self-description: works from your own
-            data, not a doctor, not medical advice. Sits once on the calm
-            new-chat surface so it frames the conversation without nagging
-            every reply. */}
-        <MedicalDisclaimer
-          variant="coach"
-          className="max-w-md text-center text-pretty"
-        />
       </div>
     </div>
   );