gnu: Remove go-github.com-nsf-gothic.

* gnu/packages/tcl.scm (go-github.com-nsf-gothic): Delete variable.

Fixes: guix/guix#1602
Change-Id: Iffa54dc0cac4a6555084bb11a70975330476f226

gnu/packages/tcl.scm

@@ -486,29 +486,3 @@ additional options for controlling the SSL session.")
         . "https://core.tcl-lang.org/tcltls/wiki/Download")
        (upstream-name . "tcltls")))
     (license license:public-domain)))
-
-(define-public go-github.com-nsf-gothic
-  (let ((commit "97dfcc195b9de36c911a69a6ec2b5b2659c05652")
-        (revision "0"))
-    (package
-      (name "go-github.com-nsf-gothic")
-      (version (git-version "0.0.0" revision commit))
-      (source (origin
-                (method git-fetch)
-                (uri (git-reference
-                       (url "https://github.com/nsf/gothic")
-                       (commit commit)))
-                (sha256
-                 (base32
-                  "1lrhbml6r4sh22rrn3m9bck70pv0g0c1diprg7cil90x0jidxczr"))
-                (file-name (git-file-name name version))))
-    (build-system go-build-system)
-    (arguments
-     `(#:import-path "github.com/nsf/gothic"))
-    (propagated-inputs
-     (list tk tcl))
-    (home-page "https://github.com/nsf/gothic")
-    (synopsis "Tcl/Tk Go bindings")
-    (description "Gothic contains Go bindings for Tcl/Tk.  The package contains
-only one type and one function that can be used to create a Tk interpreter.")
-    (license license:expat))))