Removed mail config

ref #151

src/config.ts

@@ -12,11 +12,6 @@ export const config = {
     version: process.env.VERSION || require('../package.json').version,
     seedTestData: getDataSeeding(),
     app_url: process.env.APP_URL || "http://localhost:8080",
-    mail_server: process.env.MAIL_SERVER,
-    mail_port: Number(process.env.MAIL_PORT) || 25,
-    mail_user: process.env.MAIL_USER,
-    mail_password: process.env.MAIL_PASSWORD,
-    mail_from: process.env.MAIL_FROM,
     privacy_url: process.env.PRIVACY_URL || "/privacy",
     imprint_url: process.env.IMPRINT_URL || "/imprint"
 }