remove package json index and typings fields (#277)

* remove package json index and typings fields

* add missing util export

* Remove legacy util export

.changeset/kind-jeans-double.md

@@ -0,0 +1,5 @@
+---
+"@saleor/app-sdk": patch
+---
+
+Removed unused package.json's index and typing, which were never built and bundled

.changeset/wise-wombats-bake.md

@@ -0,0 +1,5 @@
+---
+"@saleor/app-sdk": patch
+---
+
+Removed exported "util" that was never bundled

package.json

@@ -2,8 +2,6 @@
   "name": "@saleor/app-sdk",
   "version": "0.43.0",
   "description": "SDK for building great Saleor Apps",
-  "types": "index.d.ts",
-  "main": "index.js",
   "scripts": {
     "prepublishOnly": "pnpm build",
     "watch": "tsup --watch",
@@ -112,11 +110,6 @@
       "import": "./app-bridge/next/index.mjs",
       "require": "./app-bridge/next/index.js"
     },
-    "./util": {
-      "types": "./util/index.d.ts",
-      "import": "./util/index.mjs",
-      "require": "./util/index.js"
-    },
     "./handlers/next": {
       "types": "./handlers/next/index.d.ts",
       "import": "./handlers/next/index.mjs",