Remove MicroserviceDemo.

https://github.com/abpframework/abp/pull/4639

samples/MicroserviceDemo/applications/AuthServer.Host/package.json

@@ -1,8 +0,0 @@
-{
-  "version": "0.1.0",
-  "name": "msdemo-authserver-host",
-  "private": true,
-  "dependencies": {
-    "@abp/aspnetcore.mvc.ui.theme.basic": "^3.0.5"
-  }
-}

samples/MicroserviceDemo/applications/BackendAdminApp.Host/package.json

@@ -1,8 +0,0 @@
-{
-  "version": "0.1.0",
-  "name": "msdemo-backend-admin-app-host",
-  "private": true,
-  "dependencies": {
-    "@abp/aspnetcore.mvc.ui.theme.basic": "^3.0.5"
-  }
-}

samples/MicroserviceDemo/applications/PublicWebSite.Host/package.json

@@ -1,9 +0,0 @@
-{
-  "version": "0.1.0",
-  "name": "msdemo-backend-admin-app-host",
-  "private": true,
-  "dependencies": {
-    "@abp/aspnetcore.mvc.ui.theme.basic": "^3.0.5",
-    "@abp/blogging": "^3.0.5"
-  }
-}