tdf#83830: Remove experimental status from Page Deck

Change-Id: I4214d92947734bab954a07118cdee96950a97814
Reviewed-on: https://gerrit.libreoffice.org/26591Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Katarina Behrens <Katarina.Behrens@cib.de>

officecfg/registry/data/org/openoffice/Office/UI/Sidebar.xcu

@@ -59,9 +59,6 @@
         <prop oor:name="OrderIndex" oor:type="xs:int">
           <value>100</value>
         </prop>
-        <prop oor:name="IsExperimental" oor:type="xs:boolean">
-          <value>true</value>
-        </prop>
       </node>
       <node oor:name="GalleryDeck" oor:op="replace">
         <prop oor:name="Title" oor:type="xs:string">