Drop unused TemplateRepository config keys

Unused since 2016:
https://cgit.freedesktop.org/libreoffice/core/commit/?id=77725bf4df6e9cf63469c1d7f8888ea339575b5e

Change-Id: Iada86089666ad530318536b2c3d9a8e794de3e17
Reviewed-on: https://gerrit.libreoffice.org/41123Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Andras Timar <andras.timar@collabora.com>

officecfg/registry/data/org/openoffice/Office/Common.xcu

@@ -433,12 +433,6 @@
     <prop oor:name="UseSystemPrintDialog" install:module="macosx">
       <value>true</value>
     </prop>
-    <prop oor:name="TemplateRepositoryUrls">
-      <value/>
-    </prop>
-    <prop oor:name="TemplateRepositoryNames">
-      <value/>
-    </prop>
     <prop oor:name="FilePickerPlacesUrls">
       <value/>
     </prop>

officecfg/registry/schema/org/openoffice/Office/Common.xcs

@@ -5524,16 +5524,6 @@
         </info>
         <value>true</value>
       </prop>
-      <prop oor:name="TemplateRepositoryUrls" oor:type="oor:string-list" oor:nillable="false">
-        <info>
-          <desc>List of template repositories URLs bookmarked in the Templates dialog.</desc>
-        </info>
-      </prop>
-      <prop oor:name="TemplateRepositoryNames" oor:type="oor:string-list" oor:nillable="false">
-        <info>
-          <desc>List of template repositories names bookmarked in the Templates dialog.</desc>
-        </info>
-      </prop>
       <prop oor:name="FilePickerPlacesUrls" oor:type="oor:string-list" oor:nillable="false">
         <info>
           <desc>List of URLs of the places the user bookmarked in the file picker dialog.</desc>