Don't deploy on proxy reboot

It shouldn't be necessary to deploy the app on proxy reboot. When there
are multiple apps using the same proxy we'll only deploy the one we
run the reboot command from, so we don't always reboot anyway.

lib/kamal/cli/proxy.rb

@@ -120,18 +120,6 @@ class Kamal::Cli::Proxy < Kamal::Cli::Base
             execute *KAMAL.proxy.ensure_apps_config_directory
 
             execute *KAMAL.proxy.run
-
-            KAMAL.roles_on(host).select(&:running_proxy?).each do |role|
-              app = KAMAL.app(role: role, host: host)
-
-              version = capture_with_info(*app.current_running_version, raise_on_non_zero_exit: false).strip
-              endpoint = capture_with_info(*app.container_id_for_version(version)).strip
-
-              if endpoint.present?
-                info "Deploying #{endpoint} for role `#{role}` on #{host}..."
-                execute *app.deploy(target: endpoint)
-              end
-            end
           end
           run_hook "post-proxy-reboot", hosts: host_list
         end