set: drop unused set_make() function (#8879)

The function causes compiler error when built with '-Ddebug=hashmap',
and is not used anymore. Let's drop it.

src/basic/meson.build

@@ -163,7 +163,6 @@ basic_sources = files('''
         securebits.h
         selinux-util.c
         selinux-util.h
-        set.c
         set.h
         sigbus.c
         sigbus.h

src/basic/set.c

@@ -1,49 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
-/***
-  This file is part of systemd.
-
-  Copyright 2017 Lennart Poettering
-***/
-
-#include "alloc-util.h"
-#include "set.h"
-
-int set_make(Set **ret, const struct hash_ops *hash_ops HASHMAP_DEBUG_PARAMS, void *add, ...) {
-        _cleanup_set_free_ Set *s = NULL;
-        int r;
-
-        assert(ret);
-
-        s = set_new(hash_ops HASHMAP_DEBUG_PASS_ARGS);
-        if (!s)
-                return -ENOMEM;
-
-        if (add) {
-                va_list ap;
-
-                r = set_put(s, add);
-                if (r < 0)
-                        return r;
-
-                va_start(ap, add);
-
-                for (;;) {
-                        void *arg = va_arg(ap, void*);
-
-                        if (!arg)
-                                break;
-
-                        r = set_put(s, arg);
-                        if (r < 0) {
-                                va_end(ap);
-                                return r;
-                        }
-                }
-
-                va_end(ap);
-        }
-
-        *ret = TAKE_PTR(s);
-
-        return 0;
-}

src/basic/set.h

@@ -136,5 +136,3 @@ DEFINE_TRIVIAL_CLEANUP_FUNC(Set*, set_free_free);
 
 #define _cleanup_set_free_ _cleanup_(set_freep)
 #define _cleanup_set_free_free_ _cleanup_(set_free_freep)
-
-int set_make(Set **ret, const struct hash_ops *hash_ops HASHMAP_DEBUG_PARAMS, void *add, ...);