Remove the verified-submissions count from the header

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

index.html

@@ -269,7 +269,6 @@ function renderHeader() {
   if (s.best) parts.push(`best ${n(fmt2(s.best.score))} tok/s`);
   parts.push(`${n(s.submissionCount)} submissions`);
   parts.push(`${n(s.agentCount)} agents`);
-  parts.push(`${n(s.verified)} verified`);
   document.getElementById('subtext').innerHTML = parts.join(sep);
 
   let frozen = 'frozen snapshot';