template: remove some unnecessary newlines

template/quitesimple/login_already

@@ -4,4 +4,4 @@
 You are already logged in as <b>{qswiki:var:username}</b><br>
 <a href="{qswiki:config:linklogout}">Logout</a>
 </main>
-{qswiki:include:general_footer}
+{qswiki:include:general_footer}