Remove deprecated pages like Data API from the sidebar and update the metadata on these files to show the sidebar

content/references/data-api.md

@@ -5,6 +5,7 @@ seo:
     description: (DEPRECATED) RESTful interface to XRP Ledger analytics and historical data.
 status: removed
 nav_omit: true
+sidebar: ../sidebars.yaml
 ---
 # Ripple Data API v2
 

content/references/xrp-api.md

@@ -8,6 +8,7 @@ redirect_url: https://xpring-eng.github.io/xrp-api/
 nav_omit: true
 filters:
     - xrpapi_readme
+sidebar: ../sidebars.yaml
 ---
 # XRP-API
 

content/sidebars.yaml

@@ -531,8 +531,6 @@
                   - page: references/http-websocket-apis/peer-port-methods/health-check.md
                   - page: references/http-websocket-apis/peer-port-methods/peer-crawler.md
                   - page: references/http-websocket-apis/peer-port-methods/validator-list.md
-          - page: references/xrp-api.md
-          - page: references/data-api.md
           - page: references/xrp-ledger-toml.md
       - page: infrastructure/index.md
         expanded: false