rm useless line

bin/nexusbot.dart

@@ -83,12 +83,12 @@ void main(List<String> argsRaw) async {
         );
         await mailClient.sendMessageBuilder(
           mail.MessageBuilder.prepareMultipartAlternativeMessage(
-              plainText:
+            plainText:
-                  """Your registration for Federated Nexus has been accepted! Your credentials are:
+                """Your registration for Federated Nexus has been accepted! Your credentials are:
 Username: ${registration.username}.
 Password: $password""",
-              htmlText: markdownToHtml(
+            htmlText: markdownToHtml(
-                """# Your registration for Federated Nexus has been accepted!
+              """# Your registration for Federated Nexus has been accepted!
 ## Your credentials are:
 - ### Username: ${registration.username}.
 - ### Password: $password
@@ -96,11 +96,8 @@ Password: $password""",
 If you have any questions, check out [our documentation](https://federated.nexus/services/matrix/).
 
 If you have any issues, reply to this email.""",
-              ),
+            ),
-            )
+          )..subject = "Your registration for Federated Nexus has been accepted!",
-            ..subject =
-                "Your registration for Federated Nexus has been accepted!"
-            ..sender = from,
           from: from,
           recipients: [
             mail.MailAddress(registration.username, registration.email),