rekahsoft-gnu: Remove plantuml (use guix channel instead)

* rekahsoft-gnu/packages/uml.scm (plantuml):
Remove variable, leaving no more definitions; deleted file.

rekahsoft-gnu/packages/uml.scm

@@ -1,31 +0,0 @@
-;; (C) Copyright Collin J. Doering 2022
-;;
-;; This program is free software: you can redistribute it and/or modify
-;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation, either version 3 of the License, or
-;; (at your option) any later version.
-;; 
-;; This program is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-;; GNU General Public License for more details.
-;; 
-;; You should have received a copy of the GNU General Public License
-;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-(define-module (rekahsoft-gnu packages uml)
-  #:use-module (gnu packages)
-  #:use-module (gnu packages uml)
-  #:use-module (guix packages)
-  #:use-module (guix download))
-
-(define-public plantuml-1.2022.2
-  (package/inherit plantuml
-    (version "1.2022.2")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "mirror://sourceforge/plantuml/"
-                                  version "/plantuml-" version ".tar.gz"))
-              (sha256
-               (base32
-                "0qqfampcn5mcdcb4cnkskhidynhbm1nbgsvqkh8px99abk9xg7gr"))))))