Removed unused file

Was added with gtk3 support, but unused since the beginning.
Found when searching for pass-through header files (fdo#62699).

Change-Id: Iaa7746b8650671529ea40a5da6c8ec59916032e7
Reviewed-on: https://gerrit.libreoffice.org/5337
Reviewed-by: Tor Lillqvist <tml@iki.fi>
Tested-by: Tor Lillqvist <tml@iki.fi>
diff --git a/vcl/Library_vclplug_gtk3.mk b/vcl/Library_vclplug_gtk3.mk
index 5cd310f..8f22f12 100644
--- a/vcl/Library_vclplug_gtk3.mk
+++ b/vcl/Library_vclplug_gtk3.mk
@@ -25,7 +25,6 @@ $(eval $(call gb_Library_set_include,vclplug_gtk3,\
    $$(INCLUDE) \
    -I$(SRCDIR)/vcl/inc \
    -I$(SRCDIR)/vcl/unx \
    -I$(SRCDIR)/vcl/unx/gtk3/inc \
))

$(eval $(call gb_Library_add_cxxflags,vclplug_gtk3,\
diff --git a/vcl/unx/gtk3/inc/gtkprintwrapper.hxx b/vcl/unx/gtk3/inc/gtkprintwrapper.hxx
deleted file mode 100644
index 21d2460..0000000
--- a/vcl/unx/gtk3/inc/gtkprintwrapper.hxx
+++ /dev/null
@@ -1,17 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

#ifndef UNX_GTK3_INC_GTKPRINTWRAPPER_HXX_INCLUDED
#define UNX_GTK3_INC_GTKPRINTWRAPPER_HXX_INCLUDED

#include "../../gtk/inc/gtkprintwrapper.hxx"

#endif // UNX_GTK3_INC_GTKPRINTWRAPPER_HXX_INCLUDED

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */