Remove unused code

- Remove commented code
- Remove unused/immediately overwritten variables
- Remove extraneous parameters
- Remove unreachable code
- Remove duplicate array keys

src/Object/Post.php

@@ -789,7 +789,7 @@ class Post extends BaseObject
 		}
 
 		if ($conv->isWritable() && $this->isWritable()) {
-			$qc = $qcomment = null;
+			$qcomment = null;
 
 			/*
 			 * Hmmm, code depending on the presence of a particular addon?