home: Switch back to guix channel version of various emacs packages

* .guix/rekahsoft/guix-config/home.scm (%emacs-manifest): Switch from the pinned variants of
emacs-all-the-icons, emacs-treemacs, emacs-treemacs-extra, and emacs-doom-themes now that
there are newer versions published in the guix channel

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

@@ -74,12 +74,6 @@
       ;; More up-to-date plantuml
       plantuml-1.2022.2
 
-      ;; Use more up-to-date treemacs and treemacs-extra (as well as required dependencies)
-      emacs-treemacs-20201225
-      emacs-treemacs-extra-20201225
-      emacs-all-the-icons-20201225
-      emacs-doom-themes-20201225
-
       ;; Use more up-to-date ace-link
       emacs-ace-link-2021-01-1))
     (specifications->manifest
@@ -89,6 +83,7 @@
        "emacs-ace-jump-mode"
        "emacs-ace-window"
        "emacs-ag"
+       "emacs-all-the-icons"
        "emacs-all-the-icons-dired"
        "emacs-auctex"
        "emacs-auto-complete"
@@ -98,6 +93,7 @@
        "emacs-docker"
        "emacs-docker-tramp"
        "emacs-doom-modeline"
+       "emacs-doom-themes"
        "emacs-elpher"
        "emacs-emmet-mode"
        "emacs-emms"
@@ -174,6 +170,8 @@
        "emacs-swiper"
        "emacs-terraform-mode"
        "emacs-tramp"
+       "emacs-treemacs"
+       "emacs-treemacs-extra"
        "emacs-undo-tree"
        "emacs-use-package"
        "emacs-vterm"