update TOC

Author: leemthompo

explore-analyze/toc.yml

@@ -7,15 +7,6 @@ toc:
         children:
           - file: query-filter/languages/querydsl.md
           - file: query-filter/languages/esql-kibana.md
-            children:
-              - file: query-filter/languages/esql-getting-started.md
-                children:
-                  - file: query-filter/languages/esql-rest.md
-              - file: query-filter/languages/esql-multi.md
-                children:
-                  - file: query-filter/languages/esql-multi-index.md
-                  - file: query-filter/languages/esql-cross-clusters.md
-              - file: query-filter/languages/esql-task-management.md
           - file: query-filter/languages/sql.md
             children:
               - file: query-filter/languages/sql-overview.md