 (defun straight--format-timestamp (&optional timestamp)
   "Format an Elisp TIMESTAMP for the operating system.
 See `format-time-string' for the format of TIMESTAMP."
-  (pcase straight-find-flavor
-    (`gnu/bsd (format-time-string "%F %T%z" timestamp))
-    (`busybox (format-time-string "%F %T" timestamp))
-    (_ (error "Unexpected `straight-find-flavor': %S" straight-find-flavor))))
+  (format-time-string "%F %T" timestamp))
 
 (defun straight--declare-successful-build (recipe)
   "Update `straight--build-cache' to reflect a successful build of RECIPE.

        (insert-file-contents-literally
         (straight--build-cache-file))
        (let ((version (read (current-buffer)))
              (find-flavor (read (current-buffer)))
              (last-emacs-version (read (current-buffer)))
              (build-cache (read (current-buffer)))
              (autoloads-cache (read (current-buffer)))

          (print-length nil))
      ;; The version of the build cache.
      (print straight--build-cache-version (current-buffer))
      ;; Record the current Emacs version. If a different version of
      ;; Emacs is used, we have to rebuild all the packages (because
      ;; byte-compiled files cannot necessarily still be loaded).
