move implementations to external repos (#17)

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

api/handler/options.go

@@ -3,7 +3,6 @@ package handler
 import (
 	"github.com/unistack-org/micro/v3/api/router"
 	"github.com/unistack-org/micro/v3/client"
-	"github.com/unistack-org/micro/v3/client/grpc"
 )
 
 var (
@@ -26,10 +25,6 @@ func NewOptions(opts ...Option) Options {
 		o(&options)
 	}
 
-	if options.Client == nil {
-		WithClient(grpc.NewClient())(&options)
-	}
-
 	// set namespace if blank
 	if len(options.Namespace) == 0 {
 		WithNamespace("go.micro.api")(&options)