Update meta data of docs

versioned_docs/version-1.19/development/api-usage.md

@@ -1,16 +1,7 @@
 ---
 date: "2018-06-24:00:00+02:00"
-title: "API Usage"
 slug: "api-usage"
 sidebar_position: 40
-toc: false
-draft: false
-menu:
-  sidebar:
-    parent: "development"
-    name: "API Usage"
-    sidebar_position: 40
-    identifier: "api-usage"
 ---
 
 # API Usage

versioned_docs/version-1.19/development/hacking-on-gitea.md

@@ -1,16 +1,7 @@
 ---
 date: "2016-12-01T16:00:00+02:00"
-title: "Hacking on Gitea"
 slug: "hacking-on-gitea"
 sidebar_position: 10
-toc: false
-draft: false
-menu:
-  sidebar:
-    parent: "development"
-    name: "Hacking on Gitea"
-    sidebar_position: 10
-    identifier: "hacking-on-gitea"
 ---
 
 # Hacking on Gitea

versioned_docs/version-1.19/development/integrations.md

@@ -1,16 +1,10 @@
 ---
 date: "2019-04-15T17:29:00+08:00"
-title: "Integrations"
+
 slug: "integrations"
 sidebar_position: 65
-toc: false
-draft: false
-menu:
-  sidebar:
-    parent: "development"
-    name: "Integrations"
-    sidebar_position: 65
-    identifier: "integrations"
+
+
 ---
 
 # Integrations

versioned_docs/version-1.19/development/migrations.md

@@ -1,19 +1,10 @@
 ---
 date: "2019-04-15T17:29:00+08:00"
-title: "Migrations Interfaces"
 slug: "migrations-interfaces"
 sidebar_position: 55
-toc: false
-draft: false
-menu:
-  sidebar:
-    parent: "development"
-    name: "Migrations Interfaces"
-    sidebar_position: 55
-    identifier: "migrations-interfaces"
 ---
 
-# Migration Features
+# Migration Interfaces
 
 Complete migrations were introduced in Gitea 1.9.0. It defines two interfaces to support migrating
 repository data from other Git host platforms to Gitea or, in the future, migrating Gitea data to other Git host platforms.

versioned_docs/version-1.19/development/oauth2-provider.md

@@ -1,16 +1,7 @@
 ---
 date: "2019-04-19:44:00+01:00"
-title: "OAuth2 provider"
 slug: "oauth2-provider"
 sidebar_position: 41
-toc: false
-draft: false
-menu:
-  sidebar:
-    parent: "development"
-    name: "OAuth2 Provider"
-    sidebar_position: 41
-    identifier: "oauth2-provider"
 ---
 
 # OAuth2 provider