Remove the metadata.json file, no longer used

We might add it back for the demo page, but we no longer need it
in its current form.

packages/person-profile/assets/vpu-person-profile.metadata.json

-{
-  "element": "vpu-person-profile",
-  "module_src": "vpu-person-profile.js",
-  "routing_name": "person-profile",
-  "name": {
-    "de": "Benutzerprofil",
-    "en": "User profile"
-  },
-  "short_name": {
-    "de": "Profil",
-    "en": "Profile"
-  },
-  "description": {
-    "de": "Zeigt informationen über den Benutzer an",
-    "en": "Shows information about the user"
-  }
-}
-

packages/person-profile/rollup.config.js

@@ -52,7 +52,6 @@ export default {
         copy({
             targets: [
                 {src: 'assets/index.html', dest: 'dist'},
-                {src: 'assets/vpu-person-profile.metadata.json', dest: 'dist'},
                 {src: 'node_modules/vpu-common/assets/icons/*.svg', dest: 'dist/local/vpu-common/icons'},
             ],
         }),