git-send-email: remove debugging output.

rfc2047 unquoter spitted out an annoying "- unquoted" which was
added during debugging but I forgot to remove.

Signed-off-by: Junio C Hamano <junkio@cox.net>

git-send-email.perl

@@ -408,7 +408,7 @@ sub unquote_rfc2047 {
 		s/_/ /g;
 		s/=([0-9A-F]{2})/chr(hex($1))/eg;
 	}
-	return "$_ - unquoted";
+	return "$_";
 }
 
 sub send_message