.uno:DiaSpeed seems to be unimplemented & unused

Change-Id: I075e166555baf12b051e429ce9d27367b450b023
Reviewed-on: https://gerrit.libreoffice.org/33412Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Noel Grandin <noel.grandin@collabora.co.uk>

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

@@ -871,14 +871,6 @@
           <value>1</value>
         </prop>
       </node>
-      <node oor:name=".uno:DiaSpeed" oor:op="replace">
-        <prop oor:name="Label" oor:type="xs:string">
-          <value xml:lang="en-US">Transition Speed</value>
-        </prop>
-        <prop oor:name="Properties" oor:type="xs:int">
-          <value>1</value>
-        </prop>
-      </node>
       <node oor:name=".uno:DiaAuto" oor:op="replace">
         <prop oor:name="Label" oor:type="xs:string">
           <value xml:lang="en-US">AutoTransition</value>