[ticket/11471] Unrelated text in e-mail templates

Some e-mail templates contain text unrelated
with the subject of the e-mail

PHPBB3-11471

phpBB/language/en/email/post_approved.txt

@@ -10,5 +10,4 @@ If you want to view the post, click the following link:
 If you want to view the topic, click the following link:
 {U_VIEW_TOPIC}
 
-
 {EMAIL_SIG}