models/crate-owner-invite: Remove obsolete invited_by_username field

`invited_by_username` isn't actually sent anymore by the v2 (aka. `private`) API and it had been showing an empty column for 14 months now... 😅

Author: Turbo87

app/models/crate-owner-invite.js

@@ -1,7 +1,6 @@
 import Model, { attr, belongsTo } from '@ember-data/model';
 
 export default class CrateOwnerInvite extends Model {
-  @attr invited_by_username;
   @attr crate_name;
   @attr crate_id;
   @attr('date') created_at;

mirage/serializers/crate-owner-invitation.js

@@ -31,8 +31,5 @@ export default BaseSerializer.extend({
 
     hash.invitee_id = Number(hash.invitee_id);
     hash.inviter_id = Number(hash.inviter_id);
-
-    let inviter = this.schema.users.find(hash.inviter_id);
-    hash.invited_by_username = inviter.login;
   },
 });

tests/mirage/me/crate-owner-invitations/list-test.js

@@ -52,15 +52,13 @@ module('Mirage | GET /api/v1/me/crate_owner_invitations', function (hooks) {
           crate_id: Number(nanomsg.id),
           crate_name: 'nanomsg',
           created_at: '2016-12-24T12:34:56Z',
-          invited_by_username: 'janed',
           invitee_id: Number(user.id),
           inviter_id: Number(inviter.id),
         },
         {
           crate_id: Number(ember.id),
           crate_name: 'ember-rs',
           created_at: '2020-12-31T12:34:56Z',
-          invited_by_username: 'wycats',
           invitee_id: Number(user.id),
           inviter_id: Number(inviter2.id),
         },

tests/mirage/private/crate-owner-invitations/get-test.js

@@ -43,15 +43,13 @@ module('Mirage | GET /api/private/crate_owner_invitations', function (hooks) {
           crate_id: Number(nanomsg.id),
           crate_name: 'nanomsg',
           created_at: '2016-12-24T12:34:56Z',
-          invited_by_username: 'janed',
           invitee_id: Number(user.id),
           inviter_id: Number(inviter.id),
         },
         {
           crate_id: Number(ember.id),
           crate_name: 'ember-rs',
           created_at: '2020-12-31T12:34:56Z',
-          invited_by_username: 'wycats',
           invitee_id: Number(user.id),
           inviter_id: Number(inviter2.id),
         },
@@ -159,7 +157,6 @@ module('Mirage | GET /api/private/crate_owner_invitations', function (hooks) {
           crate_id: Number(ember.id),
           crate_name: 'ember-rs',
           created_at: '2020-12-31T12:34:56Z',
-          invited_by_username: 'wycats',
           invitee_id: Number(user.id),
           inviter_id: Number(inviter2.id),
         },