refactor(email-plugin): Remove unused interface

packages/email-plugin/src/types.ts

@@ -98,20 +98,6 @@ export interface EmailPluginDevModeOptions extends Omit<EmailPluginOptions, 'tra
     route: string;
 }
 
-/**
- * @description
- * The credentials used for sending email via SMTP
- *
- * @docsCategory EmailPlugin
- * @docsPage Email Plugin Types
- */
-export interface SMTPCredentials {
-    /** @description The username */
-    user: string;
-    /** @description The password */
-    pass: string;
-}
-
 /**
  * @description
  * A union of all the possible transport options for sending emails.