remove browser target so webpack won't select it

Author: Yuripetusko

package.json

@@ -9,11 +9,9 @@
   "main": "dist/index.cjs",
   "module": "./dist/index.es.js",
   "types": "./dist/index.d.ts",
-  "browser": "./browser/rmrk-tools.js",
   "exports": {
     "import": "./dist/index.es.js",
-    "require": "./dist/index.cjs",
-    "browser": "./browser/rmrk-tools.js"
+    "require": "./dist/index.cjs"
   },
   "files": [
     "dist",