Update QueryBuilder.php

Author: Nuno Chaves

src/QueryBuilder.php

@@ -22,7 +22,6 @@ class QueryBuilder
 {
 
     /** @var \Jupitern\CosmosDb\CosmosDbDatabase $db */
-    private $db = null;
     private $collection = "";
     private $partitionKey = null;
     private $fields = "";
@@ -49,17 +48,6 @@ public static function instance()
     }
 
 
-    /**
-     * @param CosmosDbDatabase $db
-     * @return $this
-     */
-    public function setDatabase(CosmosDbDatabase $db)
-    {
-        $this->db = $db;
-        return $this;
-    }
-
-
     /**
      * @param CosmosDbCollection $collection
      * @return $this
@@ -244,8 +232,7 @@ public function save($document)
         return $resultObj->_rid ?? null;
     }
 
-    
-    /* delete */
+    /* DELETE */
 
     /**
      * @param boolean $isCrossPartition