the ESM export is causing issues with edge functions

Looks like there's another issue with axios. Will turn ESM bundles back
on once we fix it and the PDF issue

.changeset/olive-eyes-hang.md

+---
+"llamaindex": patch
+---
+
+Remove ESM export for now (causing issues with edge functions)

packages/core/package.json

@@ -23,18 +23,6 @@
   "engines": {
     "node": ">=18.0.0"
   },
-  "exports": {
-    ".": {
-      "import": {
-        "types": "./dist/index.d.mts",
-        "default": "./dist/index.mjs"
-      },
-      "require": {
-        "types": "./dist/index.d.ts",
-        "default": "./dist/index.js"
-      }
-    }
-  },
   "types": "./dist/index.d.ts",
   "main": "./dist/index.js",
   "scripts": {