Revert "Consider root and current section's content type if set in front matter"

This reverts commit c790029e1d.

hugolib/site_sections.go

@@ -58,29 +58,6 @@ func (p *Page) CurrentSection() *Page {
 	return v.parent
 }
 
-// FirstSection returns the section on level 1 below home, e.g. "/docs".
-// For the home page, this will return itself.
-func (p *Page) FirstSection() *Page {
-	v := p
-	if v.origOnCopy != nil {
-		v = v.origOnCopy
-	}
-
-	if v.parent == nil || v.parent.IsHome() {
-		return v
-	}
-
-	parent := v.parent
-	for {
-		current := parent
-		parent = parent.parent
-		if parent == nil || parent.IsHome() {
-			return current
-		}
-	}
-
-}
-
 // InSection returns whether the given page is in the current section.
 // Note that this will always return false for pages that are
 // not either regular, home or section pages.