Remove rofi ssh mode and tmux-navigator cmd block

The ssh rofi mode serves no purpose with no SSH hosts configured.
The cmd block in tmux-navigator only affects lazy loading, which is disabled.

config/nvim/lua/plugins/tmux-navigator.lua

@@ -2,12 +2,5 @@ return {
   {
     "christoomey/vim-tmux-navigator",
     lazy = false,
-    cmd = {
-      "TmuxNavigateLeft",
-      "TmuxNavigateDown",
-      "TmuxNavigateUp",
-      "TmuxNavigateRight",
-      "TmuxNavigatePrevious",
-    },
   },
 }

home/rofi.nix

@@ -10,7 +10,6 @@
       "drun"
       "run"
       "window"
-      "ssh"
     ];
     extraConfig = {
       show-icons = true;