home: Update rekahsoft-guix channel, adjusting as needed

* .guix/rekahsoft/guix-config/home.scm: Remove emacs-eval-in-repl package; its now included
upstream and not in the rekahsoft-guix channel, however, even then I found I didn't use it.
* channels.scm: Update rekahsoft-guix channel.

.guix/rekahsoft/guix-config/home.scm

@@ -80,7 +80,6 @@ single certifcate used for local development with caddy.")
 
       ;; Packages from the rekahsoft-guix channel
       emacs-ace-mc
-      emacs-eval-in-repl
       emacs-hamlet-mode
       emacs-helm-rg
       emacs-helm-tramp

channels.scm

@@ -25,7 +25,7 @@
         (url "https://git.rekahsoft.ca/rekahsoft/rekahsoft-guix.git")
         (branch "master")
         (commit
-          "5cf3836d5d6e2f138c7922b4f39db6475794ff0d")
+          "4911f409b0ffc7339059198bea9c5a50e8ddaed3")
         (introduction
           (make-channel-introduction
             "d910ac4ca1e1a115934b10921bc23f50bd481043"