Remove the deprecated function in SDK

[cloudxxx8]

🚀 Feature Request

Relevant Package [REQUIRED]

This feature request is for app service

Description [REQUIRED]

app-functions-sdk-go/pkg/interfaces/service.go

Lines 92 to 97 in da92d81

	// AddRoute adds a custom REST route to the application service's internal webserver
	// A reference to this ApplicationService is add the the context that is passed to the handler, which
	// can be retrieved using the `AppService` key
	// Deprecated: It is recommended to use AddCustomRoute() instead and enable authentication for custom routes
	// TODO: Remove in 4.0
	AddRoute(route string, handler func(http.ResponseWriter, *http.Request), methods ...string) error

app-functions-sdk-go/internal/app/service.go

Lines 132 to 138 in da92d81

	// AddRoute allows you to leverage the existing webserver to add routes.
	// DEPRECATED - Use AddCustomRoute
	// TODO: Remove in 4.0
	func (svc *Service) AddRoute(route string, handler func(nethttp.ResponseWriter, *nethttp.Request), methods ...string) error {
	// Legacy behavior is to add unauthenticated route
	return svc.AddCustomRoute(route, interfaces.Unauthenticated, utils.WrapHandler(handler), methods...)
	}

Remove the deprecated function and outdated TODO

app-functions-sdk-go/pkg/interfaces/service.go

Line 101 in da92d81

// TODO: Change signature in 4.0 to use "handler echo.HandlerFunc"