test: do not try to remove /dev

src/test/test-udev.c

@@ -126,7 +126,7 @@ static int run(int argc, char *argv[]) {
                 } else {
                         if (unlink(devname) < 0)
                                 return log_error_errno(errno, "unlink('%s') failed: %m", devname);
-                        (void) rmdir_parents(devname, "/");
+                        (void) rmdir_parents(devname, "/dev");
                 }
         }