Update MailServiceTest.php

Revert previous changes

Signed-off-by: APaikens <shamanis@gmail.com>

Author: APaikens

test/Service/MailServiceTest.php

@@ -306,7 +306,6 @@ public function testAttachFilesNoNestedMixedParts(): void
     public function testMessageBodyIsResetAfterFailedSendToPreventAttachmentLeak(): void
     {
         $this->mailService->setSubject('First');
-        $this->message->text('');
         $this->message->html('First body');
         $this->mailService->addAttachment(
             $this->fileSystem->url() . '/data/mail/attachments/testPdfAttachment.pdf'
@@ -339,7 +338,6 @@ public function testMessageBodyIsResetAfterFailedSendToPreventAttachmentLeak():
     public function testAttachmentsDoNotLeakIntoSubsequentSendAfterFailure(): void
     {
         $this->mailService->setSubject('First');
-        $this->message->text('');
         $this->message->html('First email');
         $this->mailService->addAttachment(
             $this->fileSystem->url() . '/data/mail/attachments/testPdfAttachment.pdf'
@@ -367,7 +365,6 @@ public function testAttachmentsDoNotLeakIntoSubsequentSendAfterFailure(): void
         // Reconfigure: brand new email with NO attachments.
         $this->mailService->setAttachments([]);
         $this->mailService->setSubject('Second');
-        $this->message->text('');
         $this->message->html('Second email - must not carry first email\'s attachment');
 
         $this->mailService->send();
@@ -390,7 +387,6 @@ public function testAttachmentsDoNotLeakIntoSubsequentSendAfterFailure(): void
     public function testMessageBodyIsResetAfterSuccessfulSend(): void
     {
         $this->mailService->setSubject('Hello');
-        $this->message->text('');
         $this->message->html('Body');
         $this->mailService->addAttachment(
             $this->fileSystem->url() . '/data/mail/attachments/testPdfAttachment.pdf'