remove unnecessary errorMessage set

Author: J0nasMayr

src/main/java/it/aboutbits/springboot/emailservice/lib/application/ManageEmail.java

@@ -80,7 +80,6 @@ public EmailDto sendOrFail(@Valid EmailParameter parameter) throws EmailExceptio
 
         email.setState(EmailState.SENDING);
         email.setExecutionStartTime(OffsetDateTime.now());
-        email.setErrorMessage(null);
         email.incrementAttempts();
         emailRepository.save(email);