Revert "melpa-packages.json: remove "4clojure" to mitigate the effects of https://github.com/NixOS/nixpkgs/issues/12353"

This reverts commit 2f5e87a7bf.

pkgs/applications/editors/emacs-modes/melpa-packages.json

@@ -2115,6 +2115,24 @@
             "web-server"
         ]
     },
+    "4clojure": {
+        "fetch": {
+            "tag": "fetchFromGitHub",
+            "owner": "joshuarh",
+            "repo": "4clojure.el",
+            "sha256": "1fybicg46fc5jjqv7g2d3dnj1x9n58m2fg9x6qxn9l8qlzk9yxkq",
+            "rev": "3cdfd356c24cd3518397d29ae833f56a4d20b4ca"
+        },
+        "recipe": {
+            "sha256": "1w9zxy6jwiln28cmdgkbbdfk3pdscqlfahrqi6lbgpjvkw9z44mb",
+            "commit": "2b3eb31c077fcaff94b74b757c1ce17650333943"
+        },
+        "version": "20131014.1707",
+        "deps": [
+            "json",
+            "request"
+        ]
+    },
     "mustard-theme": {
         "fetch": {
             "tag": "fetchFromGitHub",