[All Hosts] (manifest) remove redundant entries in TOC (#2247)

Author: Rick-Kirkham

docs/toc.yml

@@ -47,10 +47,6 @@ items:
       href: manifest/disableentityhighlighting.md
     - name: DisplayName
       href: manifest/displayname.md
-    - name: EquivalentAddin
-      href: manifest/equivalentaddin.md
-    - name: EquivalentAddins
-      href: manifest/equivalentaddins.md
     - name: ExtendedOverrides
       href: manifest/extendedoverrides.md
     - name: FileName