XEmfParser does not need to implement XAggreggation

Checked on jenkins using 'make check' and

+    void SAL_CALL setDelegator(css::uno::Reference<css::uno::XInterface> const &) final { assert(false); }
+

Change-Id: I5ff6b1e166aff1ad67464785cf39d748f5dfc236
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/156700
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

emfio/source/emfuno/xemfparser.cxx

@@ -21,7 +21,7 @@
 
 #include <com/sun/star/graphic/XEmfParser.hpp>
 #include <com/sun/star/lang/XServiceInfo.hpp>
-#include <cppuhelper/implbase2.hxx>
+#include <cppuhelper/implbase.hxx>
 #include <cppuhelper/supportsservice.hxx>
 
 #include <utility>
@@ -43,7 +43,7 @@ namespace emfio::emfreader
 {
         namespace {
 
-        class XEmfParser : public ::cppu::WeakAggImplHelper2< graphic::XEmfParser, lang::XServiceInfo >
+        class XEmfParser : public ::cppu::WeakImplHelper< graphic::XEmfParser, lang::XServiceInfo >
         {
         private:
             uno::Reference< uno::XComponentContext > context_;