diff --git a/lib/factory.js b/lib/factory.js
index beca8d8..a74febd 100644
--- a/lib/factory.js
+++ b/lib/factory.js
@@ -100,11 +100,6 @@ var libAsync = {
 			});
 		};
 	},
-	runBuilder: function (builder) {
-		return function(callback) {
-			builder.run(callback);
-		};
-	},
 };
 
 var builderAssemblerCreate = {