Remove all plugins / install base theme

wp/wp-content/plugins/wp-mail-smtp/src/Providers/SMTP/Mailer.php

@@ -1,32 +0,0 @@
-<?php
-
-namespace WPMailSMTP\Providers\SMTP;
-
-use WPMailSMTP\Providers\MailerAbstract;
-
-/**
- * Class Mailer inherits everything from parent abstract class.
- * This file is required for a proper work of Loader and \ReflectionClass.
- *
- * @package WPMailSMTP\Providers\SMTP
- */
-class Mailer extends MailerAbstract {
-
-	/**
-	 * @inheritdoc
-	 */
-	public function is_mailer_complete() {
-
-		$options = $this->connection_options->get_group( $this->mailer );
-
-		// Host and Port are the only really required options.
-		if (
-			! empty( $options['host'] ) &&
-			! empty( $options['port'] )
-		) {
-			return true;
-		}
-
-		return false;
-	}
-}