revert: Feat: Add CLI, SDK, and API documentation page to Feast UI" (#5341)

Revert "feat: Add CLI, SDK, and API documentation page to Feast UI (#5337)"

This reverts commit 203e888.

Author: franciscojavierarceo

ui/package.json

@@ -37,7 +37,6 @@
     "query-string": "^7.1.1",
     "react-app-polyfill": "^3.0.0",
     "react-code-blocks": "^0.1.6",
-    "react-markdown": "^10.1.0",
     "react-query": "^3.39.3",
     "react-router-dom": "^6.28.0",
     "reactflow": "^11.11.4",