Clean Serializer dist

dist/preview release/serializers/babylon.objSerializer.d.ts

@@ -1,7 +0,0 @@
-
-declare module BABYLON {
-    class OBJExport {
-        static OBJ(mesh: Mesh[], materials?: boolean, matlibname?: string, globalposition?: boolean): string;
-        static MTL(mesh: Mesh): string;
-    }
-}