Remove two unnecessary forward declarations

Change-Id: I5bf56b6216835870b4beefd588f070a127835514
Reviewed-on: https://gerrit.libreoffice.org/55068
Reviewed-by: Tor Lillqvist <tml@collabora.com>
Tested-by: Tor Lillqvist <tml@collabora.com>
diff --git a/include/vbahelper/vbaapplicationbase.hxx b/include/vbahelper/vbaapplicationbase.hxx
index 55ea2a3..4f392a5 100644
--- a/include/vbahelper/vbaapplicationbase.hxx
+++ b/include/vbahelper/vbaapplicationbase.hxx
@@ -38,11 +38,6 @@ namespace com { namespace sun { namespace star {
    namespace uno { class XComponentContext; }
} } }

namespace ooo { namespace vba {
    class XApplicationBase;
    class XHelperInterface;
} }

typedef InheritedHelperInterfaceWeakImpl< ov::XApplicationBase > ApplicationBase_BASE;

struct VbaApplicationBase_Impl;