tdf#143148 Use #pragma once instead of include guards

Change-Id: I1bf17380c2ea8a9058241f3d1e6ba66b27914c67
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/186300
Tested-by: Jenkins
Reviewed-by: Roman Kuznetsov <antilibreoffice@gmail.com>

dbaccess/inc/helpids.h

@@ -17,8 +17,7 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#ifndef INCLUDED_DBACCESS_INC_HELPIDS_H
-#define INCLUDED_DBACCESS_INC_HELPIDS_H
+#pragma once
 
 #include <rtl/ustring.hxx>
 
@@ -108,6 +107,4 @@ inline constexpr OUString HID_DBWIZ_HELP = u"DBACCESS_HID_DBWIZ_HELP"_ustr;
 
 inline constexpr OUString HID_DBWIZ_ROADMAP = u"DBACCESS_HID_DBWIZ_ROADMAP"_ustr;
 
-#endif
-
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */