process SCSS @import rules with postcss-import

layouts/partials/head/canonical.html

@@ -7,13 +7,3 @@
 {{- end }}
 
 <link rel="author" href="{{ "humans.txt" | absURL }}">
-
-{{/* if this is a page/post, link View Source to specific file on GitHub. otherwise, just link to repo homepage. */}}
-{{- with .Site.Params.social.githubRepo }}
-  {{- $githubURL := printf "https://github.com/%s" . }}
-  {{- if not $.IsPage }}
-    {{- $.Scratch.Set "sourceURL" $githubURL }}
-  {{- else }}
-    {{- $.Scratch.Set "sourceURL" (printf "%s/blob/main/content/%s" $githubURL $.File.Path) }}
-  {{- end }}
-{{- end }}