Remove duplicate query languages nav group

Keep the query language reference TOC as the single sidebar entry so the narrative pages no longer duplicate the reference structure.

Co-Authored-By: GPT-5.5 <noreply@openai.com>
Co-authored-by: Cursor <cursoragent@cursor.com>

Author: 3 people

config/navigation-v2.yml

@@ -2191,28 +2191,6 @@ nav:
               title: ES|QL for search
             - page: docs-content://solutions/search/async-search-api.md
               title: Async search
-            # Language narrative pages — "understand and decide" layer
-            # These sit above the bulk reference toc further down.
-            - group: Query languages
-              page: docs-content://explore-analyze/query-filter/languages.md # [from E&A] comparison table landing
-              children:
-              - page: docs-content://explore-analyze/query-filter/languages/querydsl.md # [from E&A]
-                title: Query DSL
-              - page: docs-content://explore-analyze/query-filter/languages/kql.md # [from E&A]
-                title: KQL
-              - group: EQL
-                page: docs-content://explore-analyze/query-filter/languages/eql.md # [from E&A]
-                children:
-                - page: docs-content://explore-analyze/query-filter/languages/example-detect-threats-with-eql.md
-                  title: Detect threats with EQL
-              # [THIN] sql.md is a hollow intro + link list that duplicates the reference toc below.
-              # Candidate for removal — redirect to elasticsearch://reference/query-languages/sql.md
-              - page: docs-content://explore-analyze/query-filter/languages/sql.md # [from E&A]
-                title: SQL
-              # [THIN] lucene-query-syntax.md is a single paragraph pointing users to the Kibana UI toggle.
-              # Candidate for removal — redirect to elasticsearch://reference/query-languages/query-dsl/query-dsl-query-string-query.md
-              - page: docs-content://explore-analyze/query-filter/languages/lucene-query-syntax.md # [from E&A]
-                title: Lucene query syntax
             # Query language reference — bulk toc, cannot interleave with narrative pages above
             - toc: elasticsearch://reference/query-languages
             # Developer tools — for running and testing queries