Remove duplicated include

Change-Id: Ia5f606fd64737aed372afb2ee4762f9eb3e21a86
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/146380
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
diff --git a/lingucomponent/source/spellcheck/languagetool/languagetoolimp.cxx b/lingucomponent/source/spellcheck/languagetool/languagetoolimp.cxx
index d2c7153..9fb8a53 100644
--- a/lingucomponent/source/spellcheck/languagetool/languagetoolimp.cxx
+++ b/lingucomponent/source/spellcheck/languagetool/languagetoolimp.cxx
@@ -43,7 +43,6 @@
#include <comphelper/propertyvalue.hxx>
#include <unotools/lingucfg.hxx>
#include <osl/mutex.hxx>
#include <sal/log.hxx>

using namespace osl;
using namespace com::sun::star;