remove 'svpn' function

shared/zsh.nix

@@ -77,16 +77,6 @@ in
           zvm_after_init_commands+=(eval "$(atuin init zsh --disable-up-arrow)")
           unsetopt extendedglob
 
-      
-          function svpn() {
-            unit=$(systemctl list-unit-files | grep "openconnect\|wg-quick\|wireguard\|openvpn\|openfortivpn" | cut -d "." -f1 | ${pkgs.fzf}/bin/fzf --preview 'systemctl status {}')
-            if [ $(systemctl is-active $unit) = "inactive" ]; then
-              systemctl start $unit
-            else
-              systemctl stop $unit
-            fi
-          }
-
           prompt_dir() {
               prompt_segment blue $CURRENT_FG '%c'
           }