gnu: Remove go-github-com-ddevault-go-libvterm.

Not in use by any packages in Guix, project is archived upstream and not
maintained: "This repository has been archived by the owner on Nov 17,
2021. It is now read-only.".

* gnu/packages/golang.scm (go-github-com-ddevault-go-libvterm): Delete variable.

Change-Id: I776e9ed76640f87729b9658af3daa2e769c881ed

gnu/packages/golang.scm

@@ -3403,33 +3403,6 @@ designed to clean up raw terminal output by stripping escape sequences,
 optionally preserving color.")
     (license license:expat)))
 
-(define-public go-github-com-ddevault-go-libvterm
-  (let ((commit "b7d861da381071e5d3701e428528d1bfe276e78f")
-        (revision "0"))
-    (package
-      (name "go-github-com-ddevault-go-libvterm")
-      (version (git-version "0.0.0" revision commit))
-      (source
-        (origin
-          (method git-fetch)
-          (uri (git-reference
-                (url "https://github.com/ddevault/go-libvterm")
-                (commit commit)))
-          (sha256
-           (base32
-            "06vv4pgx0i6hjdjcar4ch18hp9g6q6687mbgkvs8ymmbacyhp7s6"))
-          (file-name (git-file-name name version))))
-      (build-system go-build-system)
-      (arguments
-       '(#:import-path "github.com/ddevault/go-libvterm"))
-      (propagated-inputs
-       (list go-github-com-mattn-go-pointer))
-      (home-page "https://github.com/ddevault/go-libvterm")
-      (synopsis "Go binding to libvterm")
-      (description
-       "This is a fork of another go-libvterm library for use with aerc.")
-      (license license:expat))))
-
 (define-public go-github-com-macronut-go-tproxy
   (package
     (name "go-github-com-macronut-go-tproxy")