refactor: NewClientWithContext -> New, and use server only

cli/app/remove.go

@@ -59,9 +59,9 @@ var appRemoveCommand = &cli.Command{
 		}
 
 		appPath := appFiles[appName].Path
-		host := appFiles[appName].Server
+		server := appFiles[appName].Server
 		ctx := context.Background()
-		cl, err := client.NewClientWithContext(host)
+		cl, err := client.New(server)
 		if err != nil {
 			logrus.Fatal(err)
 		}