gnu: go-github-com-emersion-go-smtp: Move to golang-web.

* gnu/packages/golang.scm (go-github-com-emersion-go-smpt): Move from
here ...
* gnu/packages/golang-web.scm: ... to here.

Change-Id: I5df22126cc7bdd541e33661996e7753e2cd732ea

gnu/packages/golang.scm

@@ -5595,30 +5595,6 @@ a cron spec parser and job runner.")
        "This is a fork of another go-libvterm library for use with aerc.")
       (license license:expat))))
 
-(define-public go-github-com-emersion-go-smtp
-  (package
-    (name "go-github-com-emersion-go-smtp")
-    (version "0.21.3")
-    (source (origin
-              (method git-fetch)
-              (uri (git-reference
-                    (url "https://github.com/emersion/go-smtp")
-                    (commit (string-append "v" version))))
-              (file-name (git-file-name name version))
-              (sha256
-               (base32
-                "0drvmvrkmhqhnv4m3my1hbkyyva2vi35b36j0pdi57xc9rflziq3"))))
-    (build-system go-build-system)
-    (arguments
-     (list #:import-path "github.com/emersion/go-smtp"))
-    (propagated-inputs (list go-github-com-emersion-go-sasl))
-    (home-page "https://github.com/emersion/go-smtp")
-    (synopsis "SMTP implementation for Go")
-    (description
-     "This package implements the Simple Mail Transfer Protocol as
-defined by RFC 5321.")
-    (license license:expat)))
-
 (define-public go-github-com-google-uuid
   (package
     (name "go-github-com-google-uuid")