gnu: go-chroma: Inherit from library.

Reported by Saku Laesvuori <saku@laesvuori.fi> in #74588.

* gnu/packages/golang-xyz.scm (go-chroma): Inherit from
go-github-com-alecthomas-chroma-v2.
[arguments]: Set <unpack-path> and <import-path> to build the binary.
[native-inputs]: Remove go-github-com-alecthomas-chroma-v2.

Change-Id: Iaa48b2880843e9df6a35b534578080c91c24d2a5

gnu/packages/golang-xyz.scm

@@ -8399,36 +8399,22 @@ library.")
 
 (define-public go-chroma
   (package
+    (inherit go-github-com-alecthomas-chroma-v2)
     (name "go-chroma")
-    (version "2.14.0")
-    (source
-     (origin
-       (method git-fetch)
-       (uri (git-reference
-             (url "https://github.com/alecthomas/chroma")
-             (commit (string-append "v" version))))
-       (file-name (git-file-name name version))
-       (sha256
-        (base32
-         "1qgr4gywjks869sc85wb8nby612b8wvsa1dwpsbanjsljq7wq7mp"))))
-    (build-system go-build-system)
     (arguments
      (list
       #:install-source? #f
-      #:import-path "github.com/alecthomas/chroma/cmd/chroma"))
+      #:import-path "github.com/alecthomas/chroma/cmd/chroma"
+      #:unpack-path "github.com/alecthomas/chroma"))
     (native-inputs
      (list go-github-com-alecthomas-assert-v2
-           go-github-com-alecthomas-chroma-v2
            go-github-com-alecthomas-kong
            go-github-com-mattn-go-colorable
            go-github-com-mattn-go-isatty))
-    (home-page "https://github.com/alecthomas/chroma")
-    (synopsis "General purpose syntax highlighter in pure Golang")
     (description
      (string-append (package-description go-github-com-alecthomas-chroma-v2)
                     "  This package provides an command line interface (CLI)
-tool."))
-    (license license:asl2.0)))
+tool."))))
 
 (define-public go-hclogvet
   (package