stop warning about removed config vars on update

conf.d/fzf.fish

@@ -26,10 +26,3 @@ function _fzf_uninstall --on-event fzf_uninstall
     echo "You may need to manually remove fzf_configure_bindings from your config.fish if you were using custom key bindings."
     set_color normal
 end
-
-function _fzf_migration_message --on-event fzf_update
-    set_color FF8C00 # dark orange
-    printf '\n%s\n' '[fzf.fish] Breaking change: if you have $fzf_dir_opts or $fzf_shell_vars_opts set in your environment, rename them to $fzf_directory_opts and $fzf_variables_opts respectively.'
-    printf '%s\n\n' 'See https://github.com/PatrickF1/fzf.fish/wiki/Migration-Guides#v10.1.'
-    set_color normal
-end