Refactor for flask

Sources/App/configure.swift

@@ -1,21 +0,0 @@
-import Leaf
-import Vapor
-
-// Called before your application initializes.
-public func configure(_ config: inout Config, _ env: inout Environment, _ services: inout Services) throws {
-    // Register routes to the router
-    let router = EngineRouter.default()
-    try routes(router)
-    services.register(router, as: Router.self)
-    
-    //leaf
-    try services.register(LeafProvider())
-    config.prefer(LeafRenderer.self, for: ViewRenderer.self)
-    
-    // Register middleware
-    var middlewares = MiddlewareConfig() // Create _empty_ middleware config
-    middlewares.use(FileMiddleware.self) // Serves files from `Public/` directory
-    middlewares.use(ErrorMiddleware.self) // Catches errors and converts to HTTP response
-    services.register(middlewares)
-    
-}