Remove unused ./types export from @object-ui/core package.json

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

packages/core/package.json

@@ -20,10 +20,6 @@
     ".": {
       "types": "./dist/index.d.ts",
       "import": "./dist/index.js"
-    },
-    "./types": {
-      "types": "./dist/types/index.d.ts",
-      "import": "./dist/types/index.js"
     }
   },
   "scripts": {