remove reference to deleted files in pch

Change-Id: I1c51cc094dae710abd0d13169f5c0973908c13d8
Reviewed-on: https://gerrit.libreoffice.org/36355Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>

xmlsecurity/inc/pch/precompiled_xsec_gpg.hxx

@@ -25,8 +25,6 @@
 #include <key.h>
 #include <keylistresult.h>
 #include <list>
-#include <com/sun/star/xml/crypto/gpg/GpgSecurityEnvironment.hpp>
-#include <com/sun/star/xml/crypto/gpg/GpgXMLSecurityContext.hpp>
 #include <comphelper/processfactory.hxx>
 #include <comphelper/servicehelper.hxx>
 #include <cppuhelper/factory.hxx>