Motion Sample: drop 'not dynamically validated' from the footer

These clips have been run on the real robot, so the label was misleading.

motionSample/index.html

@@ -93,7 +93,7 @@
     <span class="stat" id="stat"></span>
   </div>
   <div class="row" id="dl">
-    <span class="hint">Dataset &mdash; PHC-style pickle &middot; 2 files &middot; 2759 frames &middot; 120 Hz &middot; 31 DoF &middot; <b>kinematic reference, not dynamically validated</b></span>
+    <span class="hint">Dataset &mdash; PHC-style pickle &middot; 2 files &middot; 2759 frames &middot; 120 Hz &middot; 31 DoF &middot; kinematic reference</span>
   </div>
 </div>
 <div id="err"></div>