Dropped MongoDB support

There wasn't much to drop as it was never fully integrated. Unfortunately the only things that end up being fully integrated are the things that I actually use. Maybe someday MongoDB, maybe someday.

classes/Model.php

@@ -132,18 +132,6 @@ class Model extends Object
 	 */
 	protected $id = 'id'; // WHERE ___ = ?
 
-	/**
-	 * Collection Name
-	 *
-	 * For compatibility with the naming conventions used by MongoDB, the
-	 * collection name can be specified. If the collection name is set, it will
-	 * set the table name value to it and proceed as normal.
-	 *
-	 * @access protected
-	 * @var    mixed
-	 */
-	protected $collection = false;
-
 	/**
 	 * Joins
 	 *
@@ -372,12 +360,6 @@ class Model extends Object
 				$this->loadParameters(array($this->id => $parameters));
 			}
 
-			// Overwrites the table name with the available collection name
-			if ($this->collection != false)
-			{
-				$this->table = $this->collection;
-			}
-
 			// Starts with a basic SELECT ... FROM
 			$this->sql = array(
 				'SELECT ' . (is_array($this->fields) ? implode(', ', $this->fields) : $this->fields),