[Backport 8.x] [OpenAPI] Edit multi search and scroll API (#3062)

Author: github-actions[bot]

docs/overlays/elasticsearch-shared-overlays.yaml

@@ -183,12 +183,6 @@ actions:
           x-displayName: Script - Get languages
         - name: search
           x-displayName: Search
-        - name: msearch
-          x-displayName: Search - Multi search
-        - name: scroll
-          x-displayName: Search - Scroll
-        - name: terms_enum
-          x-displayName: Search - Terms enum
         - name: search_application
           x-displayName: Search application
         - name: searchable_snapshots