gnu: racket: Update to 8.3.

* gnu/packages/racket.scm (racket-minimal, racket): Update to 8.3.
* gnu/packages/racket.scm (racket-minimal)[source]: Remove
racket-minimal-backport-1629887.patch from patches.
* gnu/packages/patches/racket-minimal-backport-1629887.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Unregister it.

Signed-off-by: Arun Isaac <arunisaac@systemreboot.net>

gnu/local.mk

@@ -1717,7 +1717,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/ripperx-missing-file.patch		\
   %D%/packages/patches/rpcbind-CVE-2017-8779.patch		\
   %D%/packages/patches/rtags-separate-rct.patch			\
-  %D%/packages/patches/racket-minimal-backport-1629887.patch    \
   %D%/packages/patches/racket-minimal-sh-via-rktio.patch	\
   %D%/packages/patches/remake-impure-dirs.patch			\
   %D%/packages/patches/restic-0.9.6-fix-tests-for-go1.15.patch	\

gnu/packages/patches/racket-minimal-backport-1629887.patch

@@ -1,28 +0,0 @@
-From fb1a6ab205fd63a46669a463931af473e2ac0c87 Mon Sep 17 00:00:00 2001
-From: Matthew Flatt <mflatt@racket-lang.org>
-Date: Sat, 21 Aug 2021 15:29:59 -0600
-Subject: [PATCH] setup/variant: recognize starter executables
-
-Related to #3969
-
-(cherry picked from commit 1629887071fe3cc8fe8af0a7aa0d3912509cb058)
----
- racket/collects/setup/variant.rkt | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/racket/collects/setup/variant.rkt b/racket/collects/setup/variant.rkt
-index 81da6f5701..b23131e481 100644
---- a/racket/collects/setup/variant.rkt
-+++ b/racket/collects/setup/variant.rkt
-@@ -25,7 +25,7 @@
-         (and (file-exists? f)
-              (with-input-from-file f
-                (lambda ()
--                 (define m (regexp-match #rx#"bINARy tYPe:..(.)"
-+                 (define m (regexp-match #rx#"bINARy tYPe:e?..(.)"
-                                          (current-input-port)))
-                  (cond
-                    [(not m) '3m]
--- 
-2.30.2
-

gnu/packages/racket.scm

@@ -3,6 +3,7 @@
 ;;; Copyright © 2017, 2018, 2019, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2020 Pierre Neidhardt <mail@ambrevar.xyz>
 ;;; Copyright © 2021 Philip McGrath <philip@philipmcgrath.com>
+;;; Copyright © 2021 jgart <jgart@dismail.de>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -128,7 +129,7 @@
 (define-public racket-minimal
   (package
     (name "racket-minimal")
-    (version "8.2")            ; note: remember to also update racket!
+    (version "8.3")            ; note: remember to also update racket!
     (source
      (origin
        (method git-fetch)
@@ -136,11 +137,9 @@
              (url "https://github.com/racket/racket")
              (commit (string-append "v" version))))
        (sha256
-        "061bhiyjlvazph0dj9i3i3x2q5z53rp8h5cjwg3frjimkr45lncn")
+        "1i1jnv1wb0kanfg47hniafx2vhwjc33qqx66lq7wkf5hbmgsyws3")
        (file-name (git-file-name name version))
-       (patches (search-patches "racket-minimal-sh-via-rktio.patch"
+       (patches (search-patches "racket-minimal-sh-via-rktio.patch"))
-                                ;; Remove the following in version 8.3:
-                                "racket-minimal-backport-1629887.patch"))
        (modules '((guix build utils)))
        (snippet
         (with-imported-modules '((guix build utils))
@@ -427,7 +426,7 @@ Chez Scheme.")
                  %installer-mirrors))
        (sha256
         (base32
-         "10sgzsraxzxp1k2y2wvz8rcjwvhbcd6k72l9lyqr34yazlwfdz26"))
+         "0jdr0y7scvv2a3sq456ifrgq0yfsbiwavdf2m86zmrapp481mby4"))
        (snippet
         #~(begin
             (use-modules (guix build utils)