models2: Added post removal on log removal.

models/posts/remove.go

@@ -22,3 +22,9 @@ func Remove(post models.Post) (models.Post, error) {
 
 	return post, nil
 }
+
+// RemoveAllInLog removes all posts for the given log.
+func RemoveAllInLog(log models.Log) error {
+	_, err := collection.RemoveAll(bson.M{"logId": log.ShortID})
+	return err
+}