manual: remove revhistory, as we don't maintain it manually anyyway

Change-Id: Ibbe08cac143f4bff6192125940ef190cc943d307

doc/manuals/osmopcu-gb-docinfo.xml

@@ -1,15 +1,3 @@
-<revhistory>
-  <revision>
-    <revnumber>0</revnumber>
-    <date>February 2016</date>
-    <authorinitials>HW, MS</authorinitials>
-    <revremark>
-      Initial version, reflecting OsmoPCU master branch as on 2016-Mar-02
-      (commit 22d7e75e1f160e5337140d9f3dcb2679b621b646).
-    </revremark>
-  </revision>
-</revhistory>
-
 <authorgroup>
   <author>
     <firstname>Max</firstname>

doc/manuals/osmopcu-usermanual-docinfo.xml

@@ -1,14 +1,3 @@
-<revhistory>
-  <revision>
-    <revnumber>1</revnumber>
-    <date>February 13, 2016</date>
-    <authorinitials>HW</authorinitials>
-    <revremark>
-      Initial version.
-    </revremark>
-  </revision>
-</revhistory>
-
 <authorgroup>
   <author>
     <firstname>Harald</firstname>

doc/manuals/osmopcu-vty-reference.xml

@@ -11,14 +11,6 @@
 
 <book>
   <info>
-    <revhistory>
-        <revision>
-            <revnumber>v1</revnumber>
-            <date>5th March 2014</date>
-            <authorinitials>hf</authorinitials>
-            <revremark>Initial version for 0.2-307</revremark>
-        </revision>
-    </revhistory>
 
     <title>OsmoPCU VTY Reference</title>