Remove eshell configs

I never really use it.

home-manager/software/emacs/Eshell/alias

@@ -1 +0,0 @@
-alias ls 'ls -1 $1'

home-manager/software/emacs/default.nix

@@ -104,7 +104,6 @@
   };
   home.file.".emacs.d/init.el".source = ./emacs.d/init.el;
   home.file.".emacs.d/snippets".source = ./emacs.d/snippets;
-  home.file.".Eshell/alias".source = ./Eshell/alias;
   services.emacs = {
     enable = true;
     client.enable = true;

home-manager/software/emacs/emacs.d/lib/various.el

@@ -45,10 +45,6 @@
 ;; enable mouse support in the terminal
 (xterm-mouse-mode 1)
 
-;; Make the tab completion behave like in Bash.
-(add-hook 'eshell-mode-hook
-          (lambda ()
-            (setq pcomplete-cycle-completions nil)))
 
 ;; For better performance use "ssh" instead of "scp"
 (setq tramp-default-method "ssh")