[tmux] Remove shift+arrow window nav

This was conflicting with operations like manipulating dates in org-mode

home/modules/tmux/default.nix

@@ -25,11 +25,6 @@ in
   programs.tmux.baseIndex = 1;
   programs.tmux.prefix = "`";
 
-  programs.tmux.extraConfig = ''
-    bind -n S-Left previous-window
-    bind -n S-Right next-window
-  '';
-
   programs.tmux.plugins = with pkgs; [
     tmuxPlugins.cpu
     tmuxPlugins.battery