Cleanup two unused boost/bind includes in comphelper.

Change-Id: I8bfbbc82be3a91d7227ff76fc6eb570c1155dd4f
Reviewed-on: https://gerrit.libreoffice.org/19844Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>

comphelper/inc/pch/precompiled_comphelper.hxx

@@ -16,7 +16,6 @@
 
 #include <algorithm>
 #include <assert.h>
-#include <boost/bind.hpp>
 #include <boost/current_function.hpp>
 #include <boost/noncopyable.hpp>
 #include <memory>

comphelper/source/property/property.cxx

@@ -34,7 +34,6 @@
 #include <com/sun/star/uno/genfunc.h>
 
 #include <algorithm>
-#include <boost/bind.hpp>
 
 
 namespace comphelper