Revert "gnu: Add cl-weir."

This reverts commit 5763eba94c.

There may be a license issue with this package making it non-free.
Reported by Giovanni Biscuolo <g@xelera.eu> in
<https://issues.guix.gnu.org/47943>.

gnu/packages/lisp-xyz.scm

@@ -16066,54 +16066,3 @@ (define-public ecl-pathname-utils
 
 (define-public cl-pathname-utils
   (sbcl-package->cl-source-package sbcl-pathname-utils))
-
-(define-public sbcl-weir
-  (let ((commit "beb4f6f47f0538d2c6d73b1d3c9d7f58ac8aa0e9")
-        (revision "1"))
-    (package
-      (name "sbcl-weir")
-      (version (git-version "4.9.1" revision commit))
-      (source
-       (origin
-         (method git-fetch)
-         (uri (git-reference
-               (url "https://github.com/inconvergent/weir")
-               (commit commit)))
-         (file-name (git-file-name "weir" version))
-         (sha256
-          (base32 "1vm10kb51g4ba2nl5yixswkk47vwqgwqdlz5031xfff8h9z2a6ad"))))
-      (build-system asdf-build-system/sbcl)
-      (arguments
-       `(#:phases
-         (modify-phases %standard-phases
-           (add-after 'unpack 'fix-tests
-             (lambda _
-               (for-each make-file-writable
-                         (find-files "test/data/")))))))
-      (inputs
-       `(("alexandira" ,sbcl-alexandria)
-         ("cl-json" ,sbcl-cl-json)
-         ("cl-svg" ,sbcl-cl-svg)
-         ("inferior-shell" ,sbcl-inferior-shell)
-         ("lparallel" ,sbcl-lparallel)
-         ("png" ,sbcl-png)
-         ("split-sequence" ,sbcl-split-sequence)
-         ("zpng" ,sbcl-zpng)))
-      (home-page "https://github.com/inconvergent/weir")
-      (synopsis "System for making generative systems")
-      (description
-       "This package provides a Common Lisp system for generating 2d and 3d
-vector artworks with SVG and PNG export format.")
-      (license license:expat))))
-
-(define-public ecl-weir
-  (let ((pkg (sbcl-package->ecl-package sbcl-weir)))
-    (package
-      (inherit pkg)
-      (arguments
-       (substitute-keyword-arguments (package-arguments pkg)
-         ;; FIXME: 17 tests out of 128 are failing on ECL.
-         ((#:tests? _ #f) #f))))))
-
-(define-public cl-weir
-  (sbcl-package->cl-source-package sbcl-weir))