maint: Remove 'cond-expand' forms for Guile 2.0.

Note: Leave 'cond-expand' forms used in the build-side modules that can
run on %BOOTSTRAP-GUILE, which is currently Guile 2.0.

* guix/build/compile.scm: Move 'use-modules' clause from 'cond-expand'
to 'define-module' form.
(%default-optimizations): Remove 'cond-expand'.
* guix/build/download.scm (tls-wrap): Remove 'cond-expand'.
* guix/build/syscalls.scm: Remove 'cond-expand' form around
'%set-automatic-finalization-enabled?!' and
'without-automatic-finalization'.
* guix/inferior.scm (port->inferior): Remove 'cond-expand'.
* guix/scripts/pack.scm (wrapped-package)[build]: Remove 'cond-expand'.
* guix/status.scm (build-event-output-port): Remove 'cond-expand'.
* guix/store.scm (open-inet-socket): Remove 'cond-expand'.
* guix/ui.scm (install-locale): Remove 'cond-expand'.
* tests/status.scm ("current-build-output-port, UTF-8 + garbage"):
Remove 'cond-expand'.
* tests/store.scm ("current-build-output-port, UTF-8 + garbage"):
Remove 'cond-expand'.

1 files changed, 2 insertions, 4 deletions

diff --git a/tests/status.scm b/tests/status.scm
index 99abb41c8bc..08a3153218d 100644
--- a/tests/status.scm
+++ b/tests/status.scm
@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2018 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2018, 2019 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -125,9 +125,7 @@
 
 (test-equal "current-build-output-port, UTF-8 + garbage"
   ;; What about a mixture of UTF-8 + garbage?
-  (let ((replacement (cond-expand
-                      ((and guile-2 (not guile-2.2)) "?")
-                      (else "�"))))
+  (let ((replacement "�"))
     `((build-log #f ,(string-append "garbage: " replacement "lambda: λ\n"))))
   (let-values (((port get-status) (build-event-output-port cons '())))
     (display "garbage: " port)