Remove external links styling

That experiment for short long-term evaluation whether or not external
link style is worth it or not is over. And I think it's too much
considering that the target audience is for personal blogs which will
not mind such things. Plus the amount of things to make it work properly
is just too much (i.e., the font has to have the glyph).

assets/templates/site.scss

@@ -1,41 +0,0 @@
-{{/*
-  This is a site-specific styling that have to be generated.
-*/}}
-
-article > main {
-  /*
-  Select all links that are external.
-
-  In this case, we'll just exclude all links that are...
-
-  - All internal anchors.
-  - All links that points to a relative path.
-  - All origin-relative URLs.
-
-  Also, all links that are explicitly marked as external are obviously
-  considered.
-   */
-  a[href]:not(:where(
-    a[href^="#"],
-    a[href^="./"],
-    a[href^="../"],
-    a[href^="/"]:not(a[href^="//"]),
-  ))::after, a[rel~="external"]::after {
-    color: var(--base05);
-    font-size: 0.50em;
-    content: " [🡕]";
-    vertical-align: super;
-  }
-
-  /* Internal links are not to be styled. */
-  {{- $baseURL := urls.Parse $.Site.BaseURL }}
-  a[href]:where(
-    a[href^="http://{{- $baseURL.Host -}}"],
-    a[href^="https://{{- $baseURL.Host -}}"],
-    a[href$="{{- $baseURL.Host -}}"],
-    a[href$="{{- $baseURL.Host -}}/"],
-    a[href^="{{- $.Site.BaseURL -}}"],
-  )::after {
-    content: unset;
-  }
-}

layouts/partials/head.html

@@ -7,10 +7,9 @@
 
 {{- /* Combine all of the custom schems in under one stylesheet */ -}}
 {{- $themes := resources.Get "templates/theme.scss" | resources.ExecuteAsTemplate "css/themes.css" . | resources.ToCSS }}
-{{- $siteSpecificTheme := resources.Get "templates/site.scss" | resources.ExecuteAsTemplate "css/site.css" . | resources.ToCSS }}
 
 {{- /* Append the main stylesheet to be the last so the resulting stylesheet will make the custom colorschemes at the front. */ -}}
-{{ $stylesheets = $stylesheets | append $themes $siteSpecificTheme $main }}
+{{ $stylesheets = $stylesheets | append $themes $main }}
 
 {{ $style := $stylesheets | resources.Concat "css/main.css" }}