Removed transaction method from Eloquent model since it is made pointless by DB::transaction.

laravel/database/eloquent/model.php

@@ -157,17 +157,6 @@ public static function accessible($attributes)
 		static::$accessible = $attributes;
 	}
 
-	/**
-	 * Execute a callback wrapped in a database transaction.
-	 *
-	 * @param  Closure  $callback
-	 * @return void
-	 */
-	public static function transaction($callback)
-	{
-		with(new static)->query()->connection()->transaction($callback);
-	}
-
 	/**
 	 * Create a new model and store it in the database.
 	 *