chore: remove duplicate header and message from face gallery

internal/web/ui/templates/face_gallery.html

@@ -1,16 +1,4 @@
 {{define "face_gallery"}}
-<div class="card">
-  <div class="section-title">
-    <div>
-      <h2 class="title-with-icon">{{icon "profile"}}<span>人脸库管理</span></h2>
-      <div class="form-hint">批量导入或新增人员照片，修改后需在资源管理页面同步到设备。</div>
-    </div>
-  </div>
-</div>
-
-{{if .Message}}
-<div class="card"><div class="muted small" style="margin:0">{{.Message}}</div></div>
-{{end}}
 
 <div class="detail-grid">
   <div class="card">