path-util: drop the now unused dirname_malloc()

src/basic/path-util.c

@@ -7,12 +7,6 @@
 #include <stdlib.h>
 #include <unistd.h>
 
-/* When we include libgen.h because we need dirname() we immediately
- * undefine basename() since libgen.h defines it as a macro to the
- * POSIX version which is really broken. We prefer GNU basename(). */
-#include <libgen.h>
-#undef basename
-
 #include "alloc-util.h"
 #include "chase-symlinks.h"
 #include "extract-word.h"
@@ -774,27 +768,6 @@ int fsck_exists(const char *fstype) {
         return executable_is_good(checker);
 }
 
-char* dirname_malloc(const char *path) {
-        char *d, *dir, *dir2;
-
-        assert(path);
-
-        d = strdup(path);
-        if (!d)
-                return NULL;
-
-        dir = dirname(d);
-        assert(dir);
-
-        if (dir == d)
-                return d;
-
-        dir2 = strdup(dir);
-        free(d);
-
-        return dir2;
-}
-
 static const char *skip_slash_or_dot(const char *p) {
         for (; !isempty(p); p++) {
                 if (*p == '/')

src/basic/path-util.h

@@ -151,7 +151,6 @@ int fsck_exists(const char *fstype);
                 _ret;                                                   \
         })
 
-char* dirname_malloc(const char *path);
 int path_find_first_component(const char **p, bool accept_dot_dot, const char **ret);
 int path_find_last_component(const char *path, bool accept_dot_dot, const char **next, const char **ret);
 const char *last_path_component(const char *path);