[PATCH] hugolib: Deprecate site methods Author, Authors, and Social

cherry-picked from gohugoio/hugo@d4d49e0

Author: jmooring

layouts/partials/templates/opengraph.html

@@ -42,18 +42,11 @@
 {{ end }}{{ end }}
 {{- end }}
 
-{{- /* Deprecate site.Social.facebook_admin in favor of site.Params.social.facebook_admin */}}
-{{- $facebookAdmin := "" }}
+{{- /* Facebook Page Admin ID for Domain Insights */}}
 {{- with site.Params.social }}
   {{- if reflect.IsMap . }}
-    {{- $facebookAdmin = .facebook_admin }}
-  {{- end }}
-{{- else }}
-  {{- with site.Social.facebook_admin }}
-    {{- $facebookAdmin = . }}
-    {{- warnf "The social key in site configuration is deprecated. Use params.social.facebook_admin instead." }}
+    {{- with .facebook_admin }}
+      <meta property="fb:admins" content="{{ . }}" />
+    {{- end }}
   {{- end }}
 {{- end }}
-
-{{- /* Facebook Page Admin ID for Domain Insights */}}
-{{ with $facebookAdmin }}<meta property="fb:admins" content="{{ . }}" />{{ end }}

layouts/partials/templates/twitter_cards.html

@@ -16,23 +16,16 @@
 {{- end }}
 <meta name="twitter:title" content="{{ .Title }}"/>
 <meta name="twitter:description" content="{{ with .Description }}{{ . }}{{ else }}{{if .IsPage}}{{ .Summary }}{{ else }}{{ with site.Params.description }}{{ . }}{{ end }}{{ end }}{{ end -}}"/>
-{{- /* Deprecate site.Social.twitter in favor of site.Params.social.twitter */}}
+
 {{- $twitterSite := "" }}
 {{- with site.Params.social }}
   {{- if reflect.IsMap . }}
-    {{- $twitterSite = .twitter }}
-  {{- end }}
-{{- else }}
-  {{- with site.Social.twitter }}
-    {{- $twitterSite = . }}
-    {{- warnf "The social key in site configuration is deprecated. Use params.social.twitter instead." }}
-  {{- end }}
-{{- end }}
-
-{{- with $twitterSite }}
-  {{- $content := . }}
-  {{- if not (strings.HasPrefix . "@") }}
-    {{- $content = printf "@%v" $twitterSite }}
+    {{- with .twitter }}
+      {{- $content := . }}
+      {{- if not (strings.HasPrefix . "@") }}
+        {{- $content = printf "@%v" . }}
+      {{- end }}
+      <meta name="twitter:site" content="{{ $content }}"/>
+    {{- end }}
   {{- end }}
-<meta name="twitter:site" content="{{ $content }}"/>
 {{- end }}