[bug#56175] [PATCH 1/4] Revert "gnu: ldc-bootstrap-0.17: Add support for aarch64-linux."

[Efraim Flashner <efraim@flashner.co.il>]

This reverts commit 4f6ed3d2f8531ce1b75dc79365ce67587d8cb7e1.

While this does allow building ldc on aarch64, it isn't actually
helpful.
---
 gnu/packages/dlang.scm | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/gnu/packages/dlang.scm b/gnu/packages/dlang.scm
index 75e2155c83..403fcbbd6b 100644
--- a/gnu/packages/dlang.scm
+++ b/gnu/packages/dlang.scm
@@ -5,7 +5,7 @@
 ;;; Copyright © 2017 Ricardo Wurmus <rekado@elephly.net>
 ;;; Copyright © 2017, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2020 Guy Fleury Iteriteka <gfleury@disroot.org>
-;;; Copyright © 2021, 2022 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2021 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -103,17 +103,13 @@ (define ldc-bootstrap-0.17
        (sha256
         (base32 "1q6hm4fkrcwys83x0p4kfg9xrc1b9g2qicqif2zy5z4nsfsb5vgs"))))
     (build-system cmake-build-system)
-    (supported-systems '("x86_64-linux" "i686-linux"
-                         "armhf-linux" "aarch64-linux"))
+    (supported-systems '("x86_64-linux" "i686-linux" "armhf-linux"))
     (properties
      ;; Some of the tests take a very long time on ARMv7.  See
      ;; <https://lists.gnu.org/archive/html/guix-devel/2018-02/msg00312.html>.
      `((max-silent-time . ,(* 3600 3))))
     (arguments
      `(#:tests? #f               ;requires obsolete python-lit test dependency
-       ,@(if (target-aarch64?)
-             '(#:system "armhf-linux")
-             '())
        #:phases
        (modify-phases %standard-phases
          (add-after 'unpack 'unpack-submodule-sources
-- 
2.36.1