Remove metadata fields which were relocated to docfx.json (#7340)

* Remove metadata fields which were relocated to docfx.json

* Add index.md entries to docfx.json

* Update ms.technology value for index.md

aspnetcore/docfx.json

@@ -55,6 +55,7 @@
         "fundamentals/**/**.md": "aspnetcore-fundamentals",
         "getting-started/**/**.md": "aspnetcore-getstarted",
         "host-and-deploy/**/**.md": "aspnetcore-hostdeploy",
+        "index.md": "aspnetcore",
         "migration/**/**.md": "aspnetcore-migration",
         "mobile/**/**.md": "aspnetcore-mobile",
         "mvc/**/**.md": "aspnetcore-mvc",
@@ -73,6 +74,7 @@
         "fundamentals/**/**.md": "conceptual",
         "getting-started/**/**.md": "conceptual",
         "host-and-deploy/**/**.md": "conceptual",
+        "index.md": "conceptual",
         "migration/**/**.md": "conceptual",
         "mobile/**/**.md": "conceptual",
         "mvc/**/**.md": "conceptual",

aspnetcore/index.md

@@ -4,8 +4,6 @@ author: rick-anderson
 description: Get an introduction to ASP.NET Core, a cross-platform, high-performance, open-source framework for building modern, cloud-based, Internet-connected applications.
 ms.author: riande
 ms.date: 02/28/2018
-ms.technology: aspnetcore
-ms.topic: conceptual
 uid: index
 ---
 # Introduction to ASP.NET Core

aspnetcore/performance/caching/distributed.md

@@ -2,13 +2,9 @@
 title: Work with a distributed cache in ASP.NET Core
 author: ardalis
 description: Learn how to use ASP.NET Core distributed caching to improve app performance and scalability, especially in a cloud or server farm environment.
-manager: wpickett
 ms.author: riande
 ms.custom: mvc
 ms.date: 02/14/2017
-ms.prod: asp.net-core
-ms.technology: aspnet
-ms.topic: article
 uid: performance/caching/distributed
 ---
 # Work with a distributed cache in ASP.NET Core

aspnetcore/performance/caching/index.md

@@ -2,12 +2,8 @@
 title: Cache responses in ASP.NET Core
 author: ardalis
 description: Learn how to use caching to improve the performance of ASP.NET Core apps.
-manager: wpickett
 ms.author: riande
 ms.date: 10/14/2016
-ms.prod: asp.net-core
-ms.technology: aspnet
-ms.topic: article
 uid: performance/caching/index
 ---
 # Cache responses in ASP.NET Core

aspnetcore/performance/caching/memory.md

@@ -2,13 +2,9 @@
 title: Cache in-memory in ASP.NET Core
 author: rick-anderson
 description: Learn how to cache data in memory in ASP.NET Core.
-manager: wpickett
 ms.author: riande
 ms.custom: mvc
 ms.date: 12/14/2016
-ms.prod: asp.net-core
-ms.technology: aspnet
-ms.topic: article
 uid: performance/caching/memory
 ---
 # Cache in-memory in ASP.NET Core

aspnetcore/performance/caching/middleware.md

@@ -2,13 +2,10 @@
 title: Response Caching Middleware in ASP.NET Core
 author: guardrex
 description: Learn how to configure and use Response Caching Middleware in ASP.NET Core.
-manager: wpickett
 monikerRange: '>= aspnetcore-1.1'
 ms.author: riande
 ms.custom: mvc
 ms.date: 01/26/2017
-ms.prod: asp.net-core
-ms.topic: article
 uid: performance/caching/middleware
 ---
 # Response Caching Middleware in ASP.NET Core

aspnetcore/performance/caching/response.md

@@ -2,11 +2,8 @@
 title: Response caching in ASP.NET Core
 author: rick-anderson
 description: Learn how to use response caching to lower bandwidth requirements and increase performance of ASP.NET Core apps.
-manager: wpickett
 ms.author: riande
 ms.date: 09/20/2017
-ms.prod: asp.net-core
-ms.topic: article
 uid: performance/caching/response
 ---
 # Response caching in ASP.NET Core

aspnetcore/release-notes/aspnetcore-1.1.md

@@ -2,7 +2,6 @@
 title: What's new in ASP.NET Core 1.1
 author: rick-anderson
 description: Learn about the new features in ASP.NET Core 1.1.
-manager: wpickett
 monikerRange: '= aspnetcore-1.1'
 ms.date: 02/14/2017
 uid: aspnetcore-1.1

aspnetcore/release-notes/aspnetcore-2.0.md

@@ -2,7 +2,6 @@
 title: What's new in ASP.NET Core 2.0
 author: rick-anderson
 description: Learn about the new features in ASP.NET Core 2.0.
-manager: wpickett
 monikerRange: '= aspnetcore-2.0'
 ms.date: 07/10/2017
 uid: aspnetcore-2.0

aspnetcore/release-notes/aspnetcore-2.1.md

@@ -2,7 +2,6 @@
 title: What's new in ASP.NET Core 2.1
 author: isaac2004
 description: Learn about the new features in ASP.NET Core 2.1.
-manager: wpickett
 monikerRange: '= aspnetcore-2.1'
 ms.custom: mvc
 ms.date: 05/30/2018

aspnetcore/security/authentication/customize_identity_model.md

@@ -5,7 +5,6 @@ description: This article describes how to customize the underlying Entity Frame
 monikerRange: '>= aspnetcore-2.1'
 ms.author: avickers
 ms.date: 04/12/2018
-ms.prod: asp.net-core
 uid: security/authentication/customize_identity_model
 ---
 # Identity model customization