gnu: sbcl-triva.trivial: Remove ASD component fix.

* gnu/packages/lisp-xyz.scm (sbcl-triva.trivial)[arguments]: Don't replace
create-asd-file phase now that our build system supports component-less .asd
files.

gnu/packages/lisp-xyz.scm

@@ -6216,32 +6216,6 @@ (define-public sbcl-trivia.trivial
     (name "sbcl-trivia.trivial")
     (inputs
      `(("trivia.level2" ,sbcl-trivia.level2)))
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (replace 'create-asd-file
-           (lambda* (#:key outputs inputs #:allow-other-keys)
-             (let* ((out (assoc-ref outputs "out"))
-                    (lib (string-append out "/lib/" (%lisp-type)))
-                    (level2 (assoc-ref inputs "trivia.level2")))
-               (mkdir-p lib)
-               (install-file "trivia.trivial.asd" lib)
-               ;; XXX: This .asd does not have any component and the build
-               ;; system fails to work in this case.  We should update the
-               ;; build system to handle component-less .asd.
-               ;; TODO: How do we append to file in Guile?  It seems that
-               ;; (open-file ... "a") gets a "Permission denied".
-               (substitute* (string-append lib "/trivia.trivial.asd")
-                 (("\"\\)")
-                  (string-append "\")
-
-(progn (asdf/source-registry:ensure-source-registry)
-       (setf (gethash
-               \"trivia.level2\"
-               asdf/source-registry:*source-registry*)
-             #p\""
-                                 level2
-                                 "/share/common-lisp/sbcl-bundle-systems/trivia.level2.asd\"))")))))))))
     (description "Trivia is a pattern matching compiler that is compatible
 with Optima, another pattern matching library for Common Lisp.  It is meant to
 be faster and more extensible than Optima.