WITH_HELPPACK_INTEGRATION isn't substituted anywhere

(just used via SCPDEFS)

Change-Id: I23a14b0e76399b5e6303ad11ad7d09966d951b6f
Reviewed-on: https://gerrit.libreoffice.org/54915Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

configure.ac

@@ -11262,14 +11262,11 @@ dnl Test whether to integrate helppacks into the product's installer
 dnl ===================================================================
 AC_MSG_CHECKING([for helppack integration])
 if test "$with_helppack_integration" = "no"; then
-    WITH_HELPPACK_INTEGRATION=
     AC_MSG_RESULT([no integration])
 else
-    WITH_HELPPACK_INTEGRATION=TRUE
     SCPDEFS="$SCPDEFS -DWITH_HELPPACK_INTEGRATION"
     AC_MSG_RESULT([integration])
 fi
-AC_SUBST(WITH_HELPPACK_INTEGRATION)
 
 ###############################################################################
 # Extensions checking