remove experimental-handlers examples, users should visit github.com/iris-contrib/middleware instead, let's not have duplications

Former-commit-id: 72754683d1bcd4325b5fcd9f57c6cb87f1d7337d

_examples/experimental-handlers/casbin/wrapper/main.go

@@ -1,43 +0,0 @@
-package main
-
-import (
-	"github.com/kataras/iris"
-
-	"github.com/casbin/casbin"
-	cm "github.com/iris-contrib/middleware/casbin"
-)
-
-// $ go get github.com/casbin/casbin
-// $ go run main.go
-
-// Enforcer maps the model and the policy for the casbin service, we use this variable on the main_test too.
-var Enforcer = casbin.NewEnforcer("casbinmodel.conf", "casbinpolicy.csv")
-
-func newApp() *iris.Application {
-	casbinMiddleware := cm.New(Enforcer)
-
-	app := iris.New()
-	app.WrapRouter(casbinMiddleware.Wrapper())
-
-	app.Get("/", hi)
-
-	app.Any("/dataset1/{p:path}", hi) // p, dataset1_admin, /dataset1/*, * && p, alice, /dataset1/*, GET
-
-	app.Post("/dataset1/resource1", hi)
-
-	app.Get("/dataset2/resource2", hi)
-	app.Post("/dataset2/folder1/{p:path}", hi)
-
-	app.Any("/dataset2/resource1", hi)
-
-	return app
-}
-
-func main() {
-	app := newApp()
-	app.Run(iris.Addr(":8080"))
-}
-
-func hi(ctx iris.Context) {
-	ctx.Writef("Hello %s", cm.Username(ctx.Request()))
-}