Remove @ember/string (it's unused)

Author: NullVoxPopuli

package.json

@@ -30,7 +30,6 @@
   },
   "dependencies": {
     "@babel/core": "^7.23.2",
-    "@ember/string": "^3.0.0",
     "ember-cli-babel": "^8.2.0"
   },
   "devDependencies": {
@@ -101,5 +100,6 @@
   "ember-addon": {
     "configPath": "tests/dummy/config",
     "after": "ember-cli-htmlbars"
-  }
+  },
+  "packageManager": "[email protected]+sha512.38dc6fba8dba35b39340b9700112c2fe1e12f10b17134715a4aa98ccf7bb035e76fd981cf0bb384dfa98f8d6af5481c2bef2f4266a24bfa20c34eb7147ce0b5e"
 }