Remove unused variables

src/Composer/DependencyResolver/Solver.php

@@ -32,12 +32,9 @@ class Solver
     protected $addedMap = array();
     protected $updateMap = array();
     protected $watches = array();
-    protected $removeWatches = array();
     protected $decisionMap;
     protected $installedMap;
 
-    protected $packageToUpdateRule = array();
-
     protected $decisionQueue = array();
     protected $decisionQueueWhy = array();
     protected $decisionQueueFree = array();