find-unneeded-includes: filter out boost/unordered_map.hpp

As seen in configmgr/source/modifications.hxx and
configmgr/source/partial.hxx
this replacement is not needed

Change-Id: I6a8d7bc37779f305fccb5d3c7df22fba4a4f73d0
Reviewed-on: https://gerrit.libreoffice.org/72013
Tested-by: Jenkins
Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>

bin/find-unneeded-includes

@@ -86,6 +86,8 @@ def ignoreRemoval(include, toAdd, absFileName, moduleRules):
         return True
     if include == "boost/variant.hpp" and "boost/variant/variant.hpp" in toAdd:
         return True
+    if include == "boost/unordered_map.hpp" and "boost/unordered/unordered_map.hpp" in toAdd:
+        return True
 
     # Avoid .hxx to .h proposals in basic css/uno/* API
     unoapi = {